Pith Number

pith:5FHJAHJZ

pith:2025:5FHJAHJZRVIDHHIVGAJGC6VW4I

not attested not anchored not stored refs pending

Crossed surface flat bands in three-dimensional superconducting altermagnets

Bo Lu, Jorge Cayao, Keiji Yada, Yukio Tanaka, Yuri Fukaya

Three-dimensional superconducting altermagnets host crossed zero-energy surface flat bands protected by bulk nodal lines and crystal symmetry.

arxiv:2510.14724 v4 · 2025-10-16 · cond-mat.supr-con · cond-mat.mes-hall

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\pithnumber{5FHJAHJZRVIDHHIVGAJGC6VW4I}

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Record completeness

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3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We find that these crossed flat bands are topologically protected, appear at zero energy in the surface along z due to the superconducting nodal lines in the xy-plane, and their number of corners is determined by the crystal symmetry of altermagnets.

C2weakest assumption

The analysis assumes that the three-dimensional d- and g-wave altermagnetic order combined with spin-singlet chiral d-wave superconductivity produces well-defined nodal lines in the xy-plane whose topological consequences survive at the surface without additional perturbations.

C3one line summary

Crossed surface flat bands form at zero energy in 3D superconducting altermagnets due to superconducting nodal lines and altermagnetic symmetry, with their corners set by crystal symmetry.

Formal links

2 machine-checked theorem links

Cited by

1 paper in Pith

Perfect spin nonreciprocity in gated superconducting altermagnetic heterostructures

Receipt and verification

First computed	2026-06-08T01:03:49.717694Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e94e901d398d50339d153012617ab6e225152a00bf2a21be004ced1c4b317b20

Aliases

arxiv: 2510.14724 · arxiv_version: 2510.14724v4 · doi: 10.48550/arxiv.2510.14724 · pith_short_12: 5FHJAHJZRVID · pith_short_16: 5FHJAHJZRVIDHHIV · pith_short_8: 5FHJAHJZ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/5FHJAHJZRVIDHHIVGAJGC6VW4I \
  | 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: e94e901d398d50339d153012617ab6e225152a00bf2a21be004ced1c4b317b20

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e97c311393efc196887c75db4585914d6c11f26dbe16eaa36134f2df46d67f7",
    "cross_cats_sorted": [
      "cond-mat.mes-hall"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.supr-con",
    "submitted_at": "2025-10-16T14:24:27Z",
    "title_canon_sha256": "432e1098f6a765bfce2e7732a800e69fd4642b4b0684905737d8d7ee87a250d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.14724",
    "kind": "arxiv",
    "version": 4
  }
}