{"id":"383d0c3b-78e8-4eaa-a156-30ebda32f0bc","arxiv_id":"2411.09239","paper_version":1,"verdict":"CONDITIONAL","confidence":"MODERATE","novelty_score":7.0,"correctness_risk":"medium","formal_verification":"none","parameter_count":4,"one_line_summary":"An in-plane magnetic field of about 0.2 T drives beta-PdBi2 from conventional s-wave superconductivity into a nodal, likely p-wave, superconducting phase.","lead":"Researchers found that a magnetic field applied within the planes of the layered superconductor beta-PdBi2 switches it between two different superconducting states. The finding adds a non-magnetic material to a very short list of superconductors that change their pairing symmetry inside the superconducting state.","discovery_kind":"new_application","skeptic_critique":{"model":"deepseek-v4-flash","headline":"High-field V-shaped spectra are not uniquely nodal: a nodeless anisotropic s-wave gap with lifetime broadening is never fitted or excluded, so the p-wave phase assignment is underdetermined.","rationale":"The reader's weakest assumption is the same one I identify: the nodal p-wave interpretation is selected from a comparison that omits nodeless anisotropic s-wave models. This is load-bearing because the abstract's central claim is specifically a transition from s-wave to nodal pairing; if a nodeless anisotropic gap fits the same V-shaped spectra, the evidence supports only a field-induced change in the superconducting state, not necessarily nodal or p-wave pairing. I do not dispute the experimental quality, the low-field Maki fits, the kink in Bc2, or the sharp ZBC increase; these are strong evidence for a field-driven change. The concern is model selection, not internal inconsistency, and the paper itself flags ambiguity in the transitional field range where both models fit equally well. The theoretical model is qualitative because it omits orbital depairing and its p-wave Bc2 diverges, so it does not independently resolve the pairing symmetry. A concrete refit with a nodeless anisotropic s-wave model, penalized for extra parameters, would settle whether the nodal assignment is required by the data. Since the reader's CONDITIONAL verdict already captures this unresolved ambiguity, no change to the verdict is needed.","tokens_in":27776,"tokens_out":10363,"duration_ms":128019,"concrete_test":"Re-fit the spectra at B=0.4, 0.8, and 1.2 T from Fig. 3b and Supplementary Fig. 5b with a Dynes-broadened nodeless anisotropic s-wave DoS, Delta(theta)=Delta0(1+r cos 2theta) with 0<=r<1, using the same normalized-conductance integral (eq. 1) and the same Gamma parametrization as the nodal fit. Report best-fit Delta0, r, Gamma, and a model-selection criterion (e.g., BIC or chi-squared per degree of freedom) against eq. (3). If the anisotropic s-wave fit is statistically indistinguishable or better, or if the extracted Delta_min=Delta0(1-r) is not forced to zero, the data do not uniquely support nodal pairing.","verdict_should_be":"UNCHANGED","load_bearing_attack":"The central claim that above B* PdBi2 enters a nodal (p-wave) superconducting state rests on fitting the V-shaped tunnelling spectra with the line-node DoS of eq. (3), with Gamma as a broadening parameter, and on showing that the Maki s-wave model fails for any realistic zeta. This model comparison is incomplete. A nodeless anisotropic s-wave gap, e.g. Delta(theta)=Delta0(1+r cos 2theta) with Delta_min=Delta0(1-r)>0, convolved with the same thermal factor and lifetime broadening Gamma, also produces V-shaped conductance with finite zero-bias conductance when Delta_min is comparable to or smaller than Gamma, and would describe the same spectra without requiring nodes. The paper never fits such a state to the data in Fig. 3b or Supplementary Fig. 5b, and it explicitly notes that in the transitional field range B~0.2-0.4 T both the Maki s-wave and the nodal p-wave fits are equally good. The Zeeman-field argument in the Discussion, that a Zeeman field would not distinguish between two singlet states, addresses thermodynamic competition between singlet pairing channels in the model, not the ability of an anisotropic singlet gap to mimic a V-shaped DoS in tunnelling. Therefore the data establish a sharp field-induced spectral change, but the assignment to nodal pairing is underdetermined by the fits currently shown.","agreement_with_reader":"agree"},"referee_report":{"model":"deepseek-v4-flash","summary":"The paper reports tunnelling spectroscopy and transport measurements on thin exfoliated crystals of the layered superconductor β-PdBi2, using SIN tunnel junctions with hBN barriers and few-layer graphene electrodes. The central observation is a sharp, reproducible change in the tunnelling spectra as an in-plane magnetic field is increased above B* ≈ 0.2 T: the spectra evolve from a fully gapped s-wave form described by Maki theory to 'V'-shaped spectra with rapidly increasing zero-bias conductance, the extracted gap parameter shows a pronounced kink and re-entrant increase, and the in-plane upper critical field Bc2(T) exhibits a kink. The authors interpret these findings as a field-induced first-order transition from conventional s-wave pairing to a nodal (most likely p-wave triplet) superconducting state, and support this with a minimal tight-binding model incorporating hidden Rashba spin–orbit coupling, in which an in-plane field stabilizes spin-polarized triplet pairing. They also report thickness-dependent T_c and B* and discuss the relation to topological surface states and to other multiphase superconductors.","tokens_in":1691,"tokens_out":1868,"duration_ms":69922,"significance":"If the nodal-pairing assignment is correct, the result is significant: it would place β-PdBi2 among the very few materials displaying a magnetic-field-driven transition between superconducting phases of different pairing symmetry, in a non-magnetic, strongly spin-orbit-coupled system, and it would reconcile earlier theoretical predictions of multigap or unconventional pairing with the single s-wave gap seen in most prior experiments. The paper has notable strengths: the tunnelling data are of high quality, the behaviour is reproduced across five devices, the comparison to Maki's s-wave theory is careful and quantitative, and the authors provide a testable theoretical framework as well as their fitting code as supplementary material. However, the strength of the central claim is currently limited by the underdetermination of the high-field order parameter symmetry from the tunnelling fits, and by the circular element in the theory calibration, as detailed in the major comments.","major_comments":[{"comment":"The identification of the high-field phase as nodal (p-wave) rests on fitting the V-shaped spectra with the line-node DoS of Eq. (3), while the only alternative considered is the Maki s-wave model. A nodeless anisotropic s-wave gap, for example Δ(θ)=Δ0(1+r cos 2θ) with Δ_min>0, convolved with the same thermal factor and lifetime broadening Γ, would also produce V-shaped conductance with finite zero-bias conductance if Γ is comparable to or larger than Δ_min. This model has not been fitted to the data in Fig. 3b or Supplementary Fig. 5b, and the authors explicitly note that in the transitional region (B≈0.2–0.4 T) the s-wave Maki and nodal p-wave fits are equally good. The data therefore establish a sharp field-induced spectral change, but the assignment to nodal pairing is underdetermined by the fits shown. The Zeeman-field argument in the Discussion addresses thermodynamic competition between singlet pairing channels in the model, not the ability of an anisotropic singlet gap to mimic a V-shaped superconducting DoS in tunnelling.","section":"Results, Fig. 3b and Supplementary Fig. 5b"},{"comment":"The theoretical 'prediction' of the transition field B* is not independent of the experiment: the interaction strengths U and V are fixed by inserting T_c^s≈3 K and T_c^p≈2.4 K into Eq. (6), where T_c^p is itself obtained as an extrapolation of the high-field branch of the experimentally measured Bc2(T) curve to B=0. The free-energy crossing in Fig. 4b then reproduces the B* that was already used as input. The model is therefore a consistency check of the two-phase interpretation rather than a parameter-free prediction. This should be stated explicitly, and the claim of a 'predicted first-order phase transition' should be softened accordingly.","section":"Discussion, Eq. (6) and following"},{"comment":"The quantitative statement of a re-entrant increase in the order parameter above B* depends on the choice of the fitting model: above B*, Δ(B) is extracted from Eq. (3), a nodal-DoS expression, whereas below B* it is extracted from the Maki s-wave DoS. If the high-field state were instead a nodeless anisotropic s-wave state, the fit parameter in Eq. (3) would not correspond to the superconducting gap in the usual sense, and the reported discontinuity in Δ(B) would be an artifact of the model switch. The paper should present the raw spectral evolution alongside a comparative fit with an anisotropic s-wave gap, and the extracted Δ(B) should be clearly labelled as model-dependent.","section":"Main text, Fig. 3a and Methods, 'Fitting tunnelling data'"}],"minor_comments":[{"comment":"The text says 'we numerically solved eqs. (8),(9)' but the equations in the main text are numbered (9) and (10); the cross-reference should be corrected.","section":"Methods, 'Fitting tunnelling data'"},{"comment":"The derivation of the line-node DoS in Eq. (S3) uses a 3D angular integration over dΩ_k, whereas the Fermi surface of the 2D-like band considered in the continuum model is a cylinder; the relation between the 3D angular average and the effective 2D line-node density of states should be clarified.","section":"Supplementary Note 2.1"},{"comment":"The two straight-line fits to B_c2^||(T) above and below the kink at ~0.5 T are presented visually without error bars or residuals; a quantitative measure of the quality of the two-line description (and, ideally, a statistical test against a single-line fit) would strengthen the claim of a kink.","section":"Fig. 2d"},{"comment":"The abstract states the transition is 'consistent with' nodal pairing, which is appropriately cautious; however, the Discussion uses stronger language ('the new phase takes over', 'fully p-wave') and the phrase 'the predicted first-order phase transition' in the penultimate paragraph overstates the status of the theory, which is calibrated to the same data and explicitly omits orbital depairing.","section":"Abstract and Discussion"}],"recommendation":"major_revision","confidential_remarks":"The paper is interesting and the experimental data appear to be of high quality, but the central claim of a transition to nodal (p-wave) pairing is currently underdetermined by the tunnelling analysis, and the theoretical framework is used in a partially circular manner. The authors should be asked to either fit a nodeless anisotropic s-wave gap to the high-field spectra or provide a clear spectroscopic discriminator. The title and abstract may also need to be softened if the symmetry assignment cannot be strengthened. The manuscript fits the scope of the journal, and the cross-device reproducibility is a genuine asset."},"author_rebuttal":null,"desk_editor":{"model":"deepseek-v4-flash","letter":"Read the paper yesterday. What's actually new: a sharp, reproducible change in the tunnelling spectra of beta-PdBi2 under in-plane field, with the gap, zero-bias conductance, and Bc2 all showing a kink at a common B* around 0.2 T. Five devices, two thicknesses, and the Maki theory fits cleanly below B* and fails above it. That is a strong experimental package, and it does look like a field-induced transition inside the superconducting state of a non-magnetic layered material — a rare thing.\n\nThe soft spot is the pairing-symmetry assignment. The high-field V-shaped spectra are fit with the line-node DoS of eq. (3), but a nodeless anisotropic s-wave gap, e.g. Delta(theta)=Delta0(1+r cos2theta) with finite Delta_min comparable to or smaller than the broadening Gamma, also gives V-like conductance. The paper never fits such a state, and the comparison in Fig. 3b and Supp. Fig. 5b is only Maki s-wave versus nodal p-wave. So the data establish the transition; they do not establish that the high-field phase is nodal, let alone p-wave. The transitional region 0.2-0.4 T where both fits work equally well is an honest admission, but it reinforces the point.\n\nThe theory is also not a prediction for B*. U and V are extracted from the measured Tc(s-wave)=3K and extrapolated Tc(p-wave)=2.4K, and the free-energy crossing is then computed with those numbers. That's a parameterization, not an independent check. It's a useful explanatory model, and the authors do flag the missing orbital depairing, but the circularity should be stated plainly in the paper.\n\nThe Zeeman-field argument in the Discussion — that a field distinguishes singlet versus triplet, not two singlet states — is directed at d-wave singlet competition. It doesn't help against an anisotropic s-wave singlet, which is also a singlet state. So that argument leaves the main alternative alive.\n\nCredit where due: the experimental work is careful — STEM on the actual device, bulk characterization, thickness dependence, and an explicit note that the high-field identification is model-dependent. The core observation will survive even if the p-wave label does not.\n\nThis deserves serious peer review. I would send it out, with instructions that the nodal/p-wave claim needs either an explicit anisotropic-s-wave fit with broadening, or a direct order-parameter probe (phase-sensitive or Andreev), before acceptance as stated. The paper is for the superconductivity and topological-materials community; it will be read.\n\nMy recommendation: engage. Conditional accept, not desk reject.","headline":"A solid experimental case for a field-induced superconducting transition in beta-PdBi2, with the nodal p-wave assignment overreaching the data.","tokens_in":28697,"tokens_out":2150,"would_cite":true,"duration_ms":25002,"reading_group":"maybe","serious_thinker":"yes","would_accept_peer_review":true},"rs_alignment":null,"lean_confirmation":null,"pith_extraction":{"msc":[],"pacs":[],"model":"deepseek-v4-flash","headline":"In-plane fields switch β-PdBi2 from s-wave to nodal superconductivity at about 0.2 T.","keywords":["unconventional superconductivity","field-induced phase transition","nodal pairing","p-wave pairing","spin-orbit coupling","tunnelling spectroscopy","beta-PdBi2","hidden spin polarization"],"falsifier":"Fit the spectra above $B^*$ with a nodeless anisotropic s-wave gap, using the same two-parameter freedom as the p-wave fit, and compare the residuals; if that model reproduces the V-shaped conductance as well as the nodal density of states does, the nodal-pairing conclusion is not established. A bulk thermodynamic probe such as specific heat or superfluid density in a parallel field should also show a distinct feature at $B^*$ if the transition is first-order, and its absence would point to a continuous crossover.","tokens_in":27602,"feed_emoji":"🧲","tokens_out":14850,"duration_ms":137452,"temperature":0.7,"pith_summary":"The paper reports that β-PdBi2, a layered non-magnetic superconductor with strong spin-orbit coupling, switches pairing symmetry inside the superconducting state when an in-plane magnetic field is applied. Below a transition field of roughly 0.2 T, tunnelling spectra match a conventional s-wave superconductor described by BCS theory with pair breaking; above it, the spectra become V-shaped with rapidly rising zero-bias conductance, the signature of a nodal gap that the authors fit with a p-wave order parameter $\\Delta\\cos\\theta$. The proposed mechanism is that locally broken inversion symmetry locks electron spins to momentum, so an in-plane field anisotropically splits the spin-locked Fermi surfaces and makes equal-spin p-wave pairing energetically favourable. If correct, the result is a magnetic-field-driven transition between two superconducting phases in a non-magnetic material, and it reconciles theoretical predictions of unconventional multigap superconductivity in β-PdBi2 with earlier experiments that detected only a single s-wave gap.","feed_headline":"A 0.2 T in-plane field flips PdBi2 into p-wave pairing","feed_subtitle":"Tunnelling spectra reveal a sharp in-field transition inside the superconducting state — a rare pairing-symmetry switch.","key_machinery":"The argument turns on two fitting models for the tunnelling conductance and one microscopic model for the transition. Below $B^*$ the spectra are described by the standard Dynes-broadened BCS density of states within the Maki theory of a thin s-wave film in a parallel field, whose only free parameters are the gap $\\Delta$ and the pair-breaking strength $\\zeta$; the extracted $\\zeta(B)$ matches the theory only if an apparent s-wave critical field of about 0.25 T is used. Above $B^*$ the spectra are described by the nodal density of states $N_S/N_N = \\mathrm{Re}\\big[(E+i\\Gamma)\\Delta^{-1}\\arcsin(\\Delta/(E+i\\Gamma))\\big]$ for a p-wave order parameter $\\Delta\\cos\\theta$, with $\\Gamma$ absorbing pair breaking. The microscopic model is a minimal bilayer Rashba Hamiltonian on the Bi sublattices, in which globally centrosymmetric layers are locally non-centrosymmetric; two competing interactions, intra-sublayer $U$ (s-wave) and inter-sublayer $V$ (spin-triplet), enter a mean-field free energy $F(\\psi,\\eta,B,T)$ whose minimisation yields a first-order transition from the s-wave order parameter $\\psi$ to the spin-polarised p-wave order parameter $\\eta$ at a temperature-independent field $B^*$, with the triplet gap nodes aligned along the field.","core_discovery":"β-PdBi2 is a single-gap s-wave superconductor at zero field, but tunnelling spectroscopy on thin crystals in planar superconductor-insulator-normal metal junctions reveals a sharp, field-driven change inside the superconducting state. For in-plane fields below $B^*\\approx 0.2$ T the conductance spectra are quantitatively described by the standard theory of a thin s-wave film in a parallel field, with an extracted gap $\\Delta(B)$ that collapses towards an apparent critical field of about 0.25 T. At $B^*$ the spectra abruptly become V-shaped, the zero-bias conductance rises almost linearly instead of staying at zero as it would until roughly 60-70% of $B_{c2}$ for a conventional film, and the quasiparticle peaks persist; the authors show that this behaviour is inconsistent with any realistic s-wave pair-breaking strength but is accurately fit by the density of states of a nodal p-wave gap. A kink in the measured in-plane upper critical field $B_{c2}^\\parallel(T)$ marks the same boundary, and no transition appears for out-of-plane fields. The authors attribute the effect to hidden spin-momentum locking: an in-plane Zeeman field splits the Rashba-split bands anisotropically, and a minimal mean-field model with competing s-wave and spin-polarised triplet channels then shows a first-order transition to p-wave pairing at a temperature-independent $B^*$, with the two phases coexisting over a narrow field window.","pith_inferences":["The model predicts the p-wave nodes to align with the in-plane field direction, so rotating the field within the plane and tracking the tunnelling spectra would test whether the node orientation follows the field — a signature the paper does not examine.","The claimed coexistence of the two phases between roughly $B^*$ and $2B^*$ implies spatial inhomogeneity; local probes such as scanning tunnelling microscopy across that field window could image normal or nodal domains and test the first-order picture directly.","The thickness dependence suggests surface states participate: if hybridisation with topological surface states favours p-wave pairing, $B^*$ should continue to decrease for thinner crystals and eventually vanish at the two-dimensional limit.","A bulk thermodynamic measurement, such as specific heat in a parallel field, would locate the transition independently of the surface-sensitive tunnelling signal and could distinguish a sharp first-order jump from a continuous crossover."],"forward_implications":["If the transition is first-order, the s-wave and p-wave phases should coexist over a narrow field range near $B^*$; the authors note that spectra in this window are fit equally well by both models, consistent with coexistence of the two order parameters.","The transition field $B^*$ is roughly temperature-independent, and it moves to lower fields in thinner crystals alongside a suppressed $T_c$ and enhanced in-plane $B_{c2}$, a trend the authors connect to surface states favouring p-wave pairing near the boundaries.","The s-wave picture fails quantitatively above $B^*$: reproducing the spectra within the Maki theory demands pair-breaking strengths far beyond the values the same theory predicts, whereas the nodal p-wave form fits with only $\\Delta$ and $\\Gamma$ as parameters.","Out-of-plane fields produce no transition and leave s-wave pairing intact, so the effect is tied to the spin texture of the bands rather than to ordinary orbital pair breaking, and the same model explains why triplet pairing is unfavourable for out-of-plane fields.","A finite-momentum FFLO state is ruled out as an alternative explanation because both $B^*$ and $B_{c2}$ lie well below the Pauli paramagnetic limit for this material."],"supporting_citations":[{"why":"Supplies the Dynes-broadened BCS density of states used to extract the zero-field gap $\\Delta(T)$ and to fit the low-field spectra.","marker":"[36]"},{"why":"Supplies the Maki theory of a thin s-wave film in a parallel field, from which $\\Delta(B)$ and the pair-breaking strength below $B^*$ are extracted.","marker":"[37]"},{"why":"Provides the tunnelling benchmark for a conventional short-mean-free-path film in a field, whose zero-bias conductance vanishes until about 60 percent of $B_{c2}$, the contrast for the fast-rising zero-bias conductance above $B^*$.","marker":"[39]"},{"why":"Supplies the phenomenological identification of V-shaped sub-gap conductance and elevated zero-bias conductance with nodal, unconventional pairing.","marker":"[41]"},{"why":"Frames superconductivity with locally broken inversion symmetry, the mechanism class invoked to explain the field-driven transition.","marker":"[17]"},{"why":"Lists the allowed pairing channels of a bilayer Rashba system, from which the paper selects the $|m_L|=1$ triplet p-wave as the simplest nodal phase.","marker":"[47]"},{"why":"Provides prior spin-texture and single-gap tunnelling results on β-PdBi2 that the proposed field-induced transition reconciles.","marker":"[28]"},{"why":"Earlier superfluid-density measurement hinting at unconventional pairing in an in-plane field, which the present tunnelling data support and explain.","marker":"[34]"},{"why":"The field-induced superconducting transition in CeRh2As2, the closest analogue whose underlying mechanism the paper argues is different.","marker":"[20]"},{"why":"The finite-momentum FFLO pairing proposal that the paper weighs and excludes because $B^*$ and $B_{c2}$ are far below the Pauli limit.","marker":"[59]"}],"fun_headline_variants":["PdBi2 swaps s-wave for p-wave at 0.2 T field","Field switch flips PdBi2 superconductor into nodal pairing","0.2 T triggers p-wave phase in PdBi2","PdBi2 shows rare field-induced pairing switch","In-plane field tunes PdBi2 from s-wave to p-wave"],"cache_read_input_tokens":3200,"weakest_assumption_plain":"The high-field state is identified as nodal because the V-shaped spectra above $B^*$ are fit with a p-wave density of states, but the paper does not test whether an anisotropic but nodeless s-wave gap, which can also produce V-shaped conductance, fits the same data equally well.","fun_headline_variants_meta":{"raw":{"variants":["PdBi2 swaps s-wave for p-wave at 0.2 T field","Field switch flips PdBi2 superconductor into nodal pairing","0.2 T triggers p-wave phase in PdBi2","PdBi2 shows rare field-induced pairing switch","In-plane field tunes PdBi2 from s-wave to p-wave"]},"model":"deepseek-v4-flash","effort":"low","cost_usd":0.000658,"raw_usage":{"total_tokens":3069,"prompt_tokens":1064,"completion_tokens":2005,"prompt_tokens_details":{"cached_tokens":384},"prompt_cache_hit_tokens":384,"prompt_cache_miss_tokens":680,"completion_tokens_details":{"reasoning_tokens":1916}},"tokens_in":680,"tokens_out":2005,"duration_ms":82574,"temperature":1.0,"reasoning_tokens":1916,"cache_read_input_tokens":384,"cache_creation_input_tokens":0},"cache_creation_input_tokens":0},"created_at":"2026-08-12T20:52:52.810706+00:00","model_set":{"reader":"deepseek-v4-flash"},"falsifier":"Fit the spectra above $B^*$ with a nodeless anisotropic s-wave gap, using the same two-parameter freedom as the p-wave fit, and compare the residuals; if that model reproduces the V-shaped conductance as well as the nodal density of states does, the nodal-pairing conclusion is not established. A bulk thermodynamic probe such as specific heat or superfluid density in a parallel field should also show a distinct feature at $B^*$ if the transition is first-order, and its absence would point to a continuous crossover.","supporting_citations":[{"cited_title":"C., Narayanamurti, V","cited_arxiv_id":null,"evidence_quote":"Supplies the Dynes-broadened BCS density of states used to extract the zero-field gap $\\Delta(T)$ and to fit the low-field spectra."},{"cited_title":"Pauli paramagnetism and superconducting state","cited_arxiv_id":null,"evidence_quote":"Supplies the Maki theory of a thin s-wave film in a parallel field, from which $\\Delta(B)$ and the pair-breaking strength below $B^*$ are extracted."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Provides the tunnelling benchmark for a conventional short-mean-free-path film in a field, whose zero-bias conductance vanishes until about 60 percent of $B_{c2}$, the contrast for the fast-rising zero-bias conductance above $B^*$."},{"cited_title":"& Ueda, K","cited_arxiv_id":null,"evidence_quote":"Supplies the phenomenological identification of V-shaped sub-gap conductance and elevated zero-bias conductance with nodal, unconventional pairing."},{"cited_title":"H., Sigrist, M., Agterberg, D","cited_arxiv_id":null,"evidence_quote":"Frames superconductivity with locally broken inversion symmetry, the mechanism class invoked to explain the field-driven transition."},{"cited_title":"& Nagaosa, N","cited_arxiv_id":null,"evidence_quote":"Lists the allowed pairing channels of a bilayer Rashba system, from which the paper selects the $|m_L|=1$ triplet p-wave as the simplest nodal phase."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Provides prior spin-texture and single-gap tunnelling results on β-PdBi2 that the proposed field-induced transition reconciles."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"Earlier superfluid-density measurement hinting at unconventional pairing in an in-plane field, which the present tunnelling data support and explain."},{"cited_title":null,"cited_arxiv_id":null,"evidence_quote":"The field-induced superconducting transition in CeRh2As2, the closest analogue whose underlying mechanism the paper argues is different."},{"cited_title":"& Ferrell, R","cited_arxiv_id":null,"evidence_quote":"The finite-momentum FFLO pairing proposal that the paper weighs and excludes because $B^*$ and $B_{c2}$ are far below the Pauli limit."}],"review_version":1}