Observation of Dirac-like band dispersion in
Abstract
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.
- Authors:
-
- 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
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1335425
- Alternate Identifier(s):
- OSTI ID: 1238085
- Report Number(s):
- BNL-112059-2016-JA
Journal ID: ISSN 2469-9950; R&D Project: PM016; KC0201050
- Grant/Contract Number:
- SC00112704
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 93; Journal Issue: 8; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
Citation Formats
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., and Ding, H. Observation of Dirac-like band dispersion in LaAgSb2. United States: N. p., 2016.
Web. doi:10.1103/PhysRevB.93.081105.
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. Observation of Dirac-like band dispersion in LaAgSb2. United States. https://doi.org/10.1103/PhysRevB.93.081105
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., and Ding, H. Tue .
"Observation of Dirac-like band dispersion in LaAgSb2". United States. https://doi.org/10.1103/PhysRevB.93.081105. https://www.osti.gov/servlets/purl/1335425.
@article{osti_1335425,
title = {Observation of Dirac-like band dispersion in LaAgSb2},
author = {Shi, X. and Richard, P. and Wang, Kefeng and Liu, M. and Matt, C. E. and Xu, N. and Dhaka, R. S. and Ristic, Z. and Qian, T. and Yang, Y. -F. and Petrovic, C. and Shi, M. and Ding, H.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.93.081105},
journal = {Physical Review B},
number = 8,
volume = 93,
place = {United States},
year = {Tue Feb 16 00:00:00 EST 2016},
month = {Tue Feb 16 00:00:00 EST 2016}
}
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