Pith Number

pith:QMI4IZTL

pith:2026:QMI4IZTLSMWP5O2GNSORJ3U6PJ

not attested not anchored not stored refs resolved

Tunable Dual-Type Weyl Points in Dirac-Weyl Semimetal CaAgBi

Heng Gao, Hongfei Wang, Shenghao Huang, Wei Ren

First-principles calculations identify CaAgBi as hosting tunable dual-type Weyl points in addition to Dirac points.

arxiv:2605.14557 v1 · 2026-05-14 · cond-mat.mtrl-sci

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Claims

C1strongest claim

our calculations reveal 18 additional pairs of dual-type Weyl points distributed across three distinct planes: type-I in the kz=0 plane and type-II in the kz= ±0.0698 2π/c planes... the position and annihilation of Dirac and Weyl points are tunable by the alloy engineering and external strains.

C2weakest assumption

The first-principles calculations (including the specific kz=0.0698 value and strain thresholds) accurately capture the real electronic structure and topology of CaAgBi without significant errors from the choice of exchange-correlation functional, spin-orbit coupling treatment, or k-point sampling.

C3one line summary

CaAgBi is predicted to be a Dirac-Weyl semimetal with 18 pairs of dual-type Weyl points whose positions and annihilation can be tuned by alloy engineering and external strain.

References

52 extracted · 52 resolved · 0 Pith anchors

[1] Fermi arcs were calculated by using the recursive Green’s function method [44] based on MLWF by WannierTools [45] 1984

[2] S. M. Young, S. Zaheer, J. C. Teo, C. L. Kane, E. J. Mele, and A. M. Rappe, Dirac semimetal in three dimensions, Phys. Rev. Lett.108, 140405 (2012) 2012

[3] Z. Liu, B. Zhou, Y. Zhang, Z. Wang, H. Weng, D. Prabhakaran, S.-K. Mo, Z. Shen, Z. Fang, X. Dai, et al., Discovery of a three-dimensional topological Dirac semimetal, Na3Bi, Science343, 864 (2014) 2014

[4] I. Crassee, R. Sankar, W.-L. Lee, A. Akrap, and M. Or- lita, 3D Dirac semimetal Cd 3As2: A review of material properties, Phys. Rev. Materials2, 120302 (2018) 2018

[5] Z. Yin, X. Du, S. Zhang, C. Chen, D. Pei, J. Zhou, X. Gu, R. Xu, Q. Zhang, W. Zhao,et al., Electronic structure of antiferromagnetic Dirac semimetal candidate GdIn 3, Phys. Rev. Materials6, 084203 (20 2022

Receipt and verification

First computed	2026-05-17T23:39:05.639124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8311c4666b932cfebb466c9d14ee9e7a6421448c514d4594d038f1e4b2442f03

Aliases

arxiv: 2605.14557 · arxiv_version: 2605.14557v1 · doi: 10.48550/arxiv.2605.14557 · pith_short_12: QMI4IZTLSMWP · pith_short_16: QMI4IZTLSMWP5O2G · pith_short_8: QMI4IZTL

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QMI4IZTLSMWP5O2GNSORJ3U6PJ \
  | 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: 8311c4666b932cfebb466c9d14ee9e7a6421448c514d4594d038f1e4b2442f03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1c0078b0de5c299062a6632498f41b632e6f91a9311c9bc480855a278e90501",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-05-14T08:32:51Z",
    "title_canon_sha256": "bba2aac69c6262dffabd936f71300172826bc042c61840440feb1140bf8ffb0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14557",
    "kind": "arxiv",
    "version": 1
  }
}