Pith Number

pith:DJVL6YSL

pith:2026:DJVL6YSLZ2SIDFUW5ATSOP27GY

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Disorder effect on the superfluid density and the origin of the pseudogap end point in the cuprate superconductors

Jianhua Yang, Rong Cheng, Tao Li

A variational calculation finds the zero-temperature superfluid density of the disordered t-J model rises monotonically with doping and stays robust to disorder.

arxiv:2605.17227 v1 · 2026-05-17 · cond-mat.supr-con · cond-mat.str-el

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Claims

C1strongest claim

ρ_s(0) computed in this way is remarkably robust against the disorder effect. More specifically, we find that ρ_s(0) is a monotonically increasing function of doping concentration x and scales linearly with the total optical weight. This is consistent with the observation in the underdoped cuprates but is strongly at odd with the behavior in the overdoped cuprates.

C2weakest assumption

The construction of the variational state that describes the paramagnetic current response on the RVB state accurately captures the zero-temperature superfluid density of the disordered t-J model (second step of the two-step procedure described in the abstract).

C3one line summary

Variational calculation on the disordered t-J model finds superfluid density robust to disorder, monotonically increasing with doping, and linear with optical weight, supporting a Mott transition at the pseudogap end point.

References

39 extracted · 39 resolved · 0 Pith anchors

[1] The remarkable underlying ground states of cuprate superconductors 2019

[2] A tale of metals: contrasting criticalities in the pnictides and hole-doped cuprates 2018

[3] Incoherent strange metal sharply bounded by a critical doping in Bi2212 2019

[4] Scattering and pairing in cuprate superconductors 2010

[5] Thermodynamic signatures of quantum criticality in cuprates 2019

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-20T00:03:46.261229Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a6abf624bcea4819696e827273f5f363c8acf917310c7289fb22d4da716a1ed

Aliases

arxiv: 2605.17227 · arxiv_version: 2605.17227v1 · doi: 10.48550/arxiv.2605.17227 · pith_short_12: DJVL6YSLZ2SI · pith_short_16: DJVL6YSLZ2SIDFUW · pith_short_8: DJVL6YSL

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/DJVL6YSLZ2SIDFUW5ATSOP27GY \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1a6abf624bcea4819696e827273f5f363c8acf917310c7289fb22d4da716a1ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "954c323eff37a6c8032b6046d5f1ea80641992895e70ce31c4f89ee270e161e4",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2026-05-17T02:23:30Z",
    "title_canon_sha256": "4adcdabb16daa8408175e71e051bff62c99cd1e901fe479d7874e4ed21d64e4b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.17227",
    "kind": "arxiv",
    "version": 1
  }
}