Giant Chern number of a Weyl nodal surface without upper limit
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{
"revision": 5,
"id": "1520",
"created": "2022-11-01T15:40:15.468249+00:00",
"metadata": {
"doi": "10.24435/materialscloud:xm-dm",
"status": "published",
"title": "Giant Chern number of a Weyl nodal surface without upper limit",
"mcid": "2022.143",
"license_addendum": null,
"_files": [
{
"description": "The raw calculation data in Fig.1.",
"key": "Fig.1e.txt",
"size": 34014,
"checksum": "md5:e59939053481cb763c9751211677764d"
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"description": "The experimental data in Fig.2",
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"owner": 220,
"_oai": {
"id": "oai:materialscloud.org:1520"
},
"keywords": [
"Giant Chern Number",
"Weyl Nodal wall",
"Weyl Nodal Surface",
"Unpaired Weyl point"
],
"conceptrecid": "1519",
"is_last": true,
"references": [
{
"type": "Journal reference",
"doi": "https://doi.org/10.1103/PhysRevB.105.115118",
"url": "https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.115118",
"comment": "Paper in which the data is discussed.",
"citation": "J.-Z. Ma, et al. Phys. Rev. B 105, 115118 (2022)."
}
],
"publication_date": "Nov 10, 2022, 09:12:12",
"license": "Creative Commons Attribution 4.0 International",
"id": "1520",
"description": "Weyl nodes can be classified into zero-dimensional (0D) Weyl points, 1D Weyl nodal lines, and 2D Weyl nodal surfaces (WNS), which possess finite Chern numbers. Up to date, the largest Chern number of WPs identified in Weyl semimetals is 4, which is thought to be a maximal value for linearly crossing points in solids. On the other hand, whether the Chern numbers of nonzero-dimensional linear crossing Weyl nodal objects have one upper limit is still an open question. In this work, combining angle-resolved photoemission spectroscopy with density-functional theory calculations, we show that the chiral crystal AlPt hosts a cube-shaped charged WNS which is formed by the linear crossings of two singly degenerate bands. Different from conventional Weyl nodes, the cube-shaped nodal surface in AlPt is enforced by nonsymmorphic chiral symmetries and time-reversal symmetry rather than accidental band crossings, and it possesses a giant Chern number |C|=26. Moreover, our results and analysis prove that there is no upper limit for the Chern numbers of such kind of 2D Weyl nodal object. This record includes the data in the related paper Phys. Rev. B 105, 115118 \u2013 Published 14 March 2022.",
"version": 1,
"contributors": [
{
"email": "junzhama@cityu.edu.hk",
"affiliations": [
"Department of Physics, City University of Hong Kong, Kowloon, Hong Kong, China"
],
"familyname": "Ma",
"givennames": "Junzhang"
},
{
"affiliations": [
"Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-10 15 Lausanne, Switzerland"
],
"familyname": "Zhang",
"givennames": "Shengnan"
},
{
"affiliations": [
"Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui,\nChinese Academy of Sciences, Hefei 230031, China"
],
"familyname": "Song",
"givennames": "Jiangpeng"
},
{
"affiliations": [
"Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-10 15 Lausanne, Switzerland"
],
"familyname": "Wu",
"givennames": "Quansheng"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Ekahana",
"givennames": "Sandy"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Naamneh",
"givennames": "Muntaser"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Radovic",
"givennames": "Milan"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Strocov",
"givennames": "Vladimir"
},
{
"affiliations": [
"Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China"
],
"familyname": "Gao",
"givennames": "Shunye"
},
{
"affiliations": [
"Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China"
],
"familyname": "Qian",
"givennames": "Tian"
},
{
"affiliations": [
"Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China"
],
"familyname": "Ding",
"givennames": "Hong"
},
{
"affiliations": [
"Department of Physics, Tsinghua University, Beijing 100084, China"
],
"familyname": "He",
"givennames": "Ke"
},
{
"affiliations": [
"Max Planck Institute for Chemical Physics of Solids, Dresden D-01187, Germany"
],
"familyname": "Manna",
"givennames": "Kaustuv"
},
{
"affiliations": [
"Max Planck Institute for Chemical Physics of Solids, Dresden D-01187, Germany"
],
"familyname": "Felser",
"givennames": "Claudia"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Plumb",
"givennames": "Nicholas"
},
{
"affiliations": [
"Institute of Physics, \u00c9cole Polytechnique F\u00e9d\u00e9rale de Lausanne, CH-10 15 Lausanne, Switzerland"
],
"familyname": "Yazyev",
"givennames": "Oleg"
},
{
"affiliations": [
"Department of Physics, School of Physics and Optoelectronics Engineering, Anhui University, Hefei 230601, China"
],
"familyname": "Xiong",
"givennames": "Yimin"
},
{
"affiliations": [
"Photon Science Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland"
],
"familyname": "Shi",
"givennames": "Ming"
}
],
"edited_by": 576
},
"updated": "2022-11-10T08:12:12.915231+00:00"
}