Pith Number

pith:2QYFJ66T

pith:2026:2QYFJ66TTJPKFGMG3TMLI6QELX

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Comprehensive determination of Burgers vectors of threading dislocations in GaN substrates by combining reflection and transmission synchrotron-radiation x-ray topography

Hirotaka Ikeda, Kazuki Ohnishi, Kenji Iso, Yongzhao Yao, Yoshiyuki Tsusaka

Combining reflection and transmission synchrotron x-ray topography fully determines Burgers vectors of threading dislocations in GaN substrates

arxiv:2604.04392 v3 · 2026-04-06 · cond-mat.mtrl-sci

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Record completeness

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4 Citations open

5 Replications open

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Claims

C1strongest claim

By combining these analyses, the Burgers vectors of individual TDs, including edge- and mixed-type dislocations, were determined. In addition, a pair of screw-type TDs with opposite Burgers vectors, +1c, -1c, was observed in the transmission SR-XRT. These results demonstrate that the combined use of reflection and transmission SR-XRT provides a practical approach for complete determination of Burgers vectors in GaN substrates.

C2weakest assumption

The assumption that contrast size in reflection images, gb invisibility in transmission images, and kinematical linewidths uniquely and unambiguously determine all components of the Burgers vector without interference from other diffraction effects, overlapping defects, or sample-specific variations.

C3one line summary

Combining reflection and transmission SR-XRT with contrast size, invisibility criteria, and linewidth analysis allows complete Burgers vector determination for edge, mixed, and screw threading dislocations in GaN substrates.

References

54 extracted · 54 resolved · 1 Pith anchors

[1] H. Amano, Y . Baines, E. Beam, M. Borga, T. Bouchet, P. R. Chalker, M. Charles, K. J. Chen, N. Chowdhury, R. Chu, C. De Santi, M. M. De Souza, S. Decoutere, L. Di Cioccio, B. Eckardt, T. Egawa, P. Fay 2018

[2] T. Kachi, Appl. Phys. Express 19, 010103 (2026) 2026

[3] J. Kolník, İH. Oğuzman, K. F. Brennan, R. Wang, P. P. Ruden, and Y . Wang, J. Appl. Phys. 78, 1033 (1995) 1995

[4] T. Maeda, T. Narita, S. Yamada, T. Kachi, T. Kimoto, M. Horita, and J. Suda, J. Appl. Phys. 129, 185702 (2021) 2021

[5] S. Kaneki, T. Konno, H. Mori, and H. Fujikura, Appl. Phys. Express 18, 055502 (2025) 2025

Receipt and verification

First computed	2026-05-20T00:01:40.858762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d43054fbd39a5ea29986dcd8b47a045dcd27845fc44d4d2a16d62e4b0e5255eb

Aliases

arxiv: 2604.04392 · arxiv_version: 2604.04392v3 · doi: 10.48550/arxiv.2604.04392 · pith_short_12: 2QYFJ66TTJPK · pith_short_16: 2QYFJ66TTJPKFGMG · pith_short_8: 2QYFJ66T

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2QYFJ66TTJPKFGMG3TMLI6QELX \
  | 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: d43054fbd39a5ea29986dcd8b47a045dcd27845fc44d4d2a16d62e4b0e5255eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d115b8ebd1983229332af1af78612f7040b88d180257130e4326d5317e197428",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-04-06T03:45:42Z",
    "title_canon_sha256": "20c53e89f6c6b0753867eb63c634d96667d3a5eb85eb689a941b2d6d7dcd25ab"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.04392",
    "kind": "arxiv",
    "version": 3
  }
}