Pith Number

pith:QWH7HJ3F

pith:2025:QWH7HJ3FM6OGPSOSAN7JIMLHPX

not attested not anchored not stored refs resolved

Anisotropic electron-phonon coupling and chiral phonons in van der Waals room temperature ferromagnet Fe$_{5}$GeTe$_{2}$

Andrzej Ptok, Anushree Roy, Changgu Lee, Jyoti Saini, Smrutiranjan Mekap, Subhasis Ghosh

Raman tilt reveals anisotropic electron-phonon coupling and chiral phonons in Fe5GeTe2

arxiv:2512.19910 v2 · 2025-12-22 · cond-mat.mtrl-sci

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Record completeness

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2 Internet Archive

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

The angle-resolved Raman intensity under linear polarization configurations exhibits a strong tilt indicating the existence of anisotropic electron-phonon coupling, and cross-circularly polarized Raman measurements provide direct spectroscopic evidence for chiral vibrational modes.

C2weakest assumption

The observed tilt in angle-resolved Raman intensity is caused by anisotropic electron-phonon coupling rather than sample misalignment, surface effects, or instrumental polarization artifacts.

C3one line summary

Raman measurements and ab initio calculations show anisotropic electron-phonon coupling and chiral phonons in room-temperature ferromagnetic Fe5GeTe2.

References

114 extracted · 114 resolved · 0 Pith anchors

[1] J. F. Sierra, J. Fabian, R. K. Kawakami, S. Roche, and S. O. Valenzuela, Van der Waals heterostructures for spintronics and opto-spintronics, Nat. Nanotechnol.16, 856 (2021) 2021

[2] S. Yang, T. Zhang, and C. Jiang, van der Waals mag- nets: Material family, detection and modulation of mag- netism, and perspective in spintronics, Adv. Sci.8, 2002488 (2021) 2021

[3] J. T. Gish, D. Lebedev, T. W. Song, V. K. Sangwan, and M. C. Hersam, Van der Waals opto-spintronics, Nat. Electron.7, 336 (2024) 2024

[4] Z. Zhao, Y. Lin, and A. Avsar, Novel spintronic effects in two-dimensional van der Waals heterostructures, npj 2D Mater. Appl.9, 30 (2025) 2025

[5] K. Kim, J. Seo, E. Lee, K.-T. Ko, B. S. Kim, B. G. Jang, J. M. Ok, J. Lee, Y. J. Jo, W. Kang, J. H. Shim, C. Kim, H. W. Yeom, B. Il Min, B.-J. Yang, and J. S. Kim, Large anomalous Hall current induced 2018

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:10:11.508816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

858ff3a765679c67c9d2037e9431677de3e270b993a77531578f6cc42950734b

Aliases

arxiv: 2512.19910 · arxiv_version: 2512.19910v2 · doi: 10.48550/arxiv.2512.19910 · pith_short_12: QWH7HJ3FM6OG · pith_short_16: QWH7HJ3FM6OGPSOS · pith_short_8: QWH7HJ3F

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QWH7HJ3FM6OGPSOSAN7JIMLHPX \
  | 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: 858ff3a765679c67c9d2037e9431677de3e270b993a77531578f6cc42950734b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "696e654fcb92eb85b92686cf3cad7035fe86a130b442f676f283be2426dd0f8d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2025-12-22T22:35:20Z",
    "title_canon_sha256": "adc1c9d414446194f94ae1dd863065fb3a7bc44fa8e65734561c63e6e607b164"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2512.19910",
    "kind": "arxiv",
    "version": 2
  }
}