Pith Number

pith:DIX7UMWR

pith:2025:DIX7UMWRRH3MKY47TDUV4PN24K

not attested not anchored not stored refs resolved

Spin-orbit driven $J_{eff} = 1/2$ magnetism in a d$^7$ triangular-lattice monolayer cobaltate

Indra Dasgupta, Mohammad Rezwan Habib, Ritwik Das, Soumen Basak

Monolayer CoBr2 realizes spin-orbit entangled J_eff=1/2 magnetism where dominant t2g-eg hopping strengthens ferromagnetic Kitaev exchange and produces a rich J1-J3 phase diagram of competing orders on the triangular lattice.

arxiv:2511.13325 v2 · 2025-11-17 · cond-mat.str-el

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\usepackage{pith}
\pithnumber{DIX7UMWRRH3MKY47TDUV4PN24K}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

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

our results on monolayer CoBr2 establish d7 cobalt dihalides as a promising platform to explore the interplay of long-range Heisenberg and bond-dependent exchange interactions that can stabilize diverse magnetic ground states on a triangular lattice.

C2weakest assumption

The assumption that DFT-derived hopping amplitudes, when fed into an exact-diagonalization effective spin model, accurately capture the dominant magnetic interactions without significant higher-order corrections or sensitivity to the precise treatment of electronic correlations.

C3one line summary

Monolayer CoBr2 shows dominant t2g-eg hopping that strengthens ferromagnetic Kitaev interactions, leading to a J1-J3 phase diagram with ferromagnetic, stripy, spiral, 120-degree antiferromagnetic, Z2 vortex crystal, and bond-nematic phases.

References

55 extracted · 55 resolved · 0 Pith anchors

[1] In this monolayer, Co atoms form a two-dimensional triangular lattice with a Co–Co distance of 3

[2] 3(b) together with the ED-derived J1-J3 phase diagram 2020

[3] Kitaev, Annals of Physics 321, 2 (2006) , january Special Issue 2006

[4] M. Hermanns, I. Kimchi, and J. Knolle, Annual Review of Condensed Matter Physics 9, 17 (2018) 2018

[5] H. Takagi, T. Takayama, G. Jackeli, G. Khaliullin, and S. E. Nagler, Nature Reviews Physics 1, 264 (2019) 2019

Formal links

1 machine-checked theorem link

Receipt and verification

First computed	2026-05-21T02:04:54.862417Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a2ffa32d189f6c5639f98e95e3dbae2a15f98cb47aefa5b332841fc7e50a312

Aliases

arxiv: 2511.13325 · arxiv_version: 2511.13325v2 · doi: 10.48550/arxiv.2511.13325 · pith_short_12: DIX7UMWRRH3M · pith_short_16: DIX7UMWRRH3MKY47 · pith_short_8: DIX7UMWR

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/DIX7UMWRRH3MKY47TDUV4PN24K \
  | 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: 1a2ffa32d189f6c5639f98e95e3dbae2a15f98cb47aefa5b332841fc7e50a312

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c612ba0be8f0f35c718c7e4f5d78f9cff926f92a5d109b29e3420a20187452a0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.str-el",
    "submitted_at": "2025-11-17T13:01:10Z",
    "title_canon_sha256": "b780af5690e2043a41bd537dd1f51ab9b822271dfb08d6d440d5ab9fd3be038b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2511.13325",
    "kind": "arxiv",
    "version": 2
  }
}