Observation of Dirac-like band dispersion in LaAgSb2

Shi, X.; Richard, P.; Wang, Kefeng; Liu, M.; Matt, C. E.; Xu, N.; Dhaka, R. S.; Ristic, Z.; Qian, T.; Yang, Y. -F.; Petrovic, C.; Shi, M.; Ding, H.

doi:10.1103/PhysRevB.93.081105

Title: Observation of Dirac-like band dispersion in ${LaAgSb}_{2}$

Journal Article · Tue Feb 16 00:00:00 EST 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.93.081105· OSTI ID:1335425

Shi, X. ^[1]; Richard, P. ^[2]; Wang, Kefeng ^[3]; Liu, M. ^[1]; Matt, C. E. ^[4]; Xu, N. ^[5]; Dhaka, R. S. ^[6]; Ristic, Z. ^[7]; Qian, T. ^[1]; Yang, Y. -F. ^[8]; Petrovic, C. ^[3]; Shi, M. ^[9]; Ding, H. ^[8]

Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS)
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS) ; Collaborative Innovation Center of Quantum Matter, Beijing (China)
Brookhaven National Lab. (BNL), Upton, NY (United States). CMPMSD
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; ETH Zurich (Switzerland). Laboratory for Solid State Physics
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; Ecole Polytechnique Federale Lausanne (Switzlerland). Institute of Condensed Matter Physics
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; Ecole Polytechnique Federale Lausanne (Switzlerland). Institute of Condensed Matter Physics; Indian Institute of Technology Delhi, New Delhi (India). Department of Physics
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source; Ecole Polytechnique Federale Lausanne (Switzlerland). Institute of Condensed Matter Physics; Belgrade University, Belgrade (Serbia). Atomic Physics Laboratory, VINCA Institute of Nuclear Sciences
Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Physics. Beijing National Lab. for Condensed Matter Physics (BNLCP-CAS) ; Collaborative Innovation Center of Quantum Matter, Beijing (China)
Paul Scherrer Inst. (PSI), Villigen (Switzerland). Swiss Light Source

In this paper, we present a combined angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations study of the electronic structure of LaAgSb₂ in the entire first Brillouin zone. We observe a Dirac-cone-like structure in the vicinity of the Fermi level formed by the crossing of two linear energy bands, as well as the nested segments of a Fermi surface pocket emerging from the cone. In conclusion, our ARPES results show the close relationship of the Dirac cone to the charge-density-wave ordering, providing consistent explanations for exotic behaviors in this material.

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Research Organization:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC00112704

OSTI ID:: 1335425

Alternate ID(s):: OSTI ID: 1238085

Report Number(s):: BNL-112059-2016-JA; R&D Project: PM016; KC0201050

Journal Information:: Physical Review B, Vol. 93, Issue 8; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 26 works

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Cited By (6)

Nearly massless Dirac fermions hosted by Sb square net in BaMnSb2 Liu, Jinyu; Hu, Jin; Cao, Huibo Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep30525	journal	July 2016
Dirac fermions and possible weak antilocalization in LaCuSb ₂ Chamorro, J. R.; Topp, A.; Fang, Y. APL Materials, Vol. 7, Issue 12 https://doi.org/10.1063/1.5124685	journal	December 2019
Correlated materials design: prospects and challenges Adler, Ran; Kang, Chang-Jong; Yee, Chuck-Hou Reports on Progress in Physics, Vol. 82, Issue 1 https://doi.org/10.1088/1361-6633/aadca4	journal	December 2018
Significant change in the electronic behavior associated with structural distortions in monocrystalline ${SrAg}_{4} {As}_{2}$ Shen, Bing; Emmanouilidou, Eve; Deng, Xiaoyu Physical Review B, Vol. 98, Issue 23 https://doi.org/10.1103/physrevb.98.235130	journal	December 2018
Correlated materials design: prospects and challenges Adler, Ran; Kang, Chang-Jong; Yee, Chuck-Hou arXiv https://doi.org/10.48550/arxiv.1807.00398	text	January 2018
Dirac Fermions and Possible Weak Antilocalization in LaCuSb$_{2}$ Chamorro, J. R.; Topp, A.; Fang, Y. arXiv https://doi.org/10.48550/arxiv.2001.00703	text	January 2020

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