Pith Number

pith:RFL3PZOE

pith:2026:RFL3PZOEVVNGB24LFXHABJPAWF

not attested not anchored not stored refs pending

Interlayer Five-Spin Polaron in Superconducting Bilayer Nickelates

Brian Moritz, Cheng-Tai Kuo, Christopher T. Parzyck, Chunjing Jia, Eder G. Lomeli, Eun Kyo Ko, Harold Y. Hwang, Heemin Lee, Jiarui Li, Jonathan Pelliciari, Jun-Sik Lee, Ronny Sutarto, Taehun Kim, Thomas P. Devereaux, Valentina Bisogni, Vivek Thampy, Wanli Yang, Wei-Sheng Lee, Yaoju Tarn, Yidi Liu, Yijun Yu, Zengqing Zhuo

Superconductivity in bilayer nickelates requires oxygen-stoichiometric regions that host an interlayer five-spin polaron ground state instead of spin density waves.

arxiv:2605.02891 v2 · 2026-05-04 · cond-mat.str-el · cond-mat.supr-con

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\pithnumber{RFL3PZOEVVNGB24LFXHABJPAWF}

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2 Internet Archive

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4 Citations open

5 Replications open

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Claims

C1strongest claim

Our results identify oxygen stoichiometry as a key parameter controlling interlayer coupling and thus the electronic structure of bilayer nickelates. In concert with theory, we propose that a ligand hole primarily resides at the inter-bilayer apical oxygen, forming a robust interlayer five-spin polaron state, which serves as the ground state for superconducting bilayer nickelates.

C2weakest assumption

The assumption that the distinct electronic structures observed by Ni-L3 and O-K edge spectroscopy directly indicate a ligand hole at the inter-bilayer apical oxygen forming a five-spin polaron ground state, rather than other possible multi-orbital configurations or artifacts from phase segregation.

C3one line summary

Superconductivity in bilayer nickelates occurs in SDW-free oxygen-stoichiometric regions, with an interlayer five-spin polaron proposed as the ground state.

Formal links

3 machine-checked theorem links

Cited by

1 paper in Pith

Atomically resolved intrinsic superconducting gap in (La,Pr)3Ni2O7 films

Receipt and verification

First computed	2026-06-12T01:09:28.685282Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8957b7e5c4ad5a60eb8b2dce00a5e0b15b12c3a28af055b0456d1b47d6751a77

Aliases

arxiv: 2605.02891 · arxiv_version: 2605.02891v2 · doi: 10.48550/arxiv.2605.02891 · pith_short_12: RFL3PZOEVVNG · pith_short_16: RFL3PZOEVVNGB24L · pith_short_8: RFL3PZOE

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RFL3PZOEVVNGB24LFXHABJPAWF \
  | 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: 8957b7e5c4ad5a60eb8b2dce00a5e0b15b12c3a28af055b0456d1b47d6751a77

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "220ae6e2ee849d0bcce737dbb99d70874f34a7d435801b316ff45d3fcfee81d6",
    "cross_cats_sorted": [
      "cond-mat.supr-con"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2026-05-04T17:59:37Z",
    "title_canon_sha256": "b5f9534227c9d966a92c1d505cc045c7f7a710f44914171e399a1d27daa05f30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.02891",
    "kind": "arxiv",
    "version": 2
  }
}