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pith:EFJPJSWS

pith:2026:EFJPJSWSNLBSFBNNE2AJYZBDMV

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Thermal Transport in Defective Uranium Nitride: Effects of Point Defects, Anharmonicity, and Electronic Contributions

Beihan Chen, David H. Hurley, Marat Khafizov, Miaomiao Jin, Zilong Hua

Point defects reduce thermal conductivity in uranium nitride most for uranium interstitials, with electronic contributions dominating above 600 K.

arxiv:2605.17726 v1 · 2026-05-18 · cond-mat.mtrl-sci

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Claims

C1strongest claim

The total thermal conductivity, incorporating electron-phonon coupling and an estimated electronic contribution, yields excellent agreement with experiment in the pristine system, with electronic contributions dominating thermal transport above 600 K. Moreover, with defect-electron contribution introduced through a semiclassical electron-defect scattering model, the total conductivity degradation follows IU, VU, IN, and VN in descending order, and electron-phonon coupling becomes negligible in defective systems.

C2weakest assumption

The machine learning interatomic potential accurately captures anharmonic phonon interactions and defect-induced local strain effects in both pristine and defective uranium nitride, as required for the Green-Kubo and normal mode analysis results to be reliable across the temperature range.

C3one line summary

Point defects reduce lattice thermal conductivity in UN at low temperatures with uranium interstitials causing broadest scattering, while electronic contributions dominate above 600 K and match experiment when included, becoming negligible in defective cases.

References

88 extracted · 88 resolved · 0 Pith anchors

[1] Many-particle physics , author=. 2013 , publisher= 2013

[2] M. Samsel-Czekała and E. Talik and P. de V. Du Plessis and R. Troć and H. Misiorek and C. Sułkowski , doi =. Electronic structure and magnetic and transport properties of single-crystalline. Physical

[3] Physical Review B , volume= 2004

[4] Applied physics reviews , volume= 2021

[5] Physical Review B , volume= 1983

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Receipt and verification

First computed	2026-05-20T00:04:55.022436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2152f4cad26ac32285ad26809c6423654665548354f44554b7a30688ffdaff34

Aliases

arxiv: 2605.17726 · arxiv_version: 2605.17726v1 · doi: 10.48550/arxiv.2605.17726 · pith_short_12: EFJPJSWSNLBS · pith_short_16: EFJPJSWSNLBSFBNN · pith_short_8: EFJPJSWS

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EFJPJSWSNLBSFBNNE2AJYZBDMV \
  | 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: 2152f4cad26ac32285ad26809c6423654665548354f44554b7a30688ffdaff34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "897de9c3d39be9f2bed795cdfc131972bb3a19fc5f28dce86c4d507d3bb08df5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-05-18T01:07:20Z",
    "title_canon_sha256": "6c861700ed58964c535b36931793802de92a38e80c976a53893539a225324df5"
  },
  "schema_version": "1.0",
  "source": {
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    "kind": "arxiv",
    "version": 1
  }
}