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Phys.: Condens. Matter"],"published-print":{"date-parts":[[2024,2,21]]},"abstract":"Abstract<\/jats:title>\n \n The family of transition-metal dipnictides has been of theoretical and experimental interest because this family hosts topological states and extremely large magnetoresistance (MR). Recently,\n \n \n \n <\/jats:tex-math>\n \n \n \n T<\/mml:mi>\n a<\/mml:mi>\n A<\/mml:mi>\n s<\/mml:mi>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:msub>\n <\/mml:math>\n \n <\/jats:inline-formula>\n , a member of this family, has been predicted to support a topological crystalline insulating state. Here, by using high-resolution angle-resolved photoemission spectroscopy (ARPES), we reveal both closed and open pockets in the metallic Fermi surface (FS) and linearly dispersive bands on the (\n \n \n \n <\/jats:tex-math>\n \n \n 2<\/mml:mn>\n \u203e<\/mml:mo>\n <\/mml:mover>\n 01<\/mml:mn>\n <\/mml:math>\n \n <\/jats:inline-formula>\n ) surface, along with the presence of extreme MR observed from magneto-transport measurements. A comparison of the ARPES results with first-principles computations shows that the linearly dispersive bands on the measured surface of\n \n \n \n <\/jats:tex-math>\n \n \n \n T<\/mml:mi>\n a<\/mml:mi>\n A<\/mml:mi>\n s<\/mml:mi>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:msub>\n <\/mml:math>\n \n <\/jats:inline-formula>\n are trivial bulk bands. The absence of symmetry-protected surface state on the (\n \n \n \n <\/jats:tex-math>\n \n \n 2<\/mml:mn>\n \u203e<\/mml:mo>\n <\/mml:mover>\n 01<\/mml:mn>\n <\/mml:math>\n \n <\/jats:inline-formula>\n ) surface indicates its topologically dark nature. The presence of open FS features suggests that the open-orbit fermiology could contribute to the extremely large MR of\n \n \n \n <\/jats:tex-math>\n \n \n \n T<\/mml:mi>\n a<\/mml:mi>\n A<\/mml:mi>\n s<\/mml:mi>\n <\/mml:mrow>\n 2<\/mml:mn>\n <\/mml:msub>\n <\/mml:math>\n \n <\/jats:inline-formula>\n .\n <\/jats:p>","DOI":"10.1088\/1361-648x\/ad04fc","type":"journal-article","created":{"date-parts":[[2023,10,19]],"date-time":"2023-10-19T18:27:07Z","timestamp":1697740027000},"page":"075502","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":3,"title":["Electronic structure in a transition metal dipnictide TaAs\n 2<\/sub>"],"prefix":"10.1088","volume":"36","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1371-3101","authenticated-orcid":true,"given":"Sabin","family":"Regmi","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cheng-Yi","family":"Huang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mojammel A","family":"Khan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baokai","family":"Wang","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1307-1732","authenticated-orcid":false,"given":"Anup","family":"Pradhan Sakhya","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9081-8786","authenticated-orcid":true,"given":"M Mofazzel","family":"Hosen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jesse","family":"Thompson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2013-1126","authenticated-orcid":true,"given":"Bahadur","family":"Singh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7645-1631","authenticated-orcid":true,"given":"Jonathan D","family":"Denlinger","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Masahiro","family":"Ishigami","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"J F","family":"Mitchell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8513-7422","authenticated-orcid":false,"given":"Dariusz","family":"Kaczorowski","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arun","family":"Bansil","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8288-8474","authenticated-orcid":false,"given":"Madhab","family":"Neupane","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2023,11,14]]},"reference":[{"key":"cmad04fcbib1","doi-asserted-by":"publisher","first-page":"3045","DOI":"10.1103\/RevModPhys.82.3045","volume":"82","author":"Hasan","year":"2010","journal-title":"Rev. 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