Observation of a two-dimensional Fermi surface and Dirac dispersion in
Journal Article
·
· Physical Review B
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division. Advanced Light Source
- Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
- Univ. of Texas, Dallas, TX (United States). Dept. of Chemistry and Biochemistry
- Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
Here we present the crystal structure, electronic structure, and transport properties of the material $${\mathrm{YbMnSb}}_{2}$$, a candidate system for the investigation of Dirac physics in the presence of magnetic order. Our measurements reveal that this system is a low-carrier-density semimetal with a two-dimensional Fermi surface arising from a Dirac dispersion, consistent with the predictions of density-functional-theory calculations of the antiferromagnetic system. Finally, the low temperature resistivity is very large, suggesting that scattering in this system is highly efficient at dissipating momentum despite its Dirac-like nature.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Gordon and Betty Moore Foundation (United States)
- Grant/Contract Number:
- AC02-05CH11231; DGE-1106400; DMR-1360863; 1607753; GBMF4374
- OSTI ID:
- 1483269
- Alternate ID(s):
- OSTI ID: 1416414
- Journal Information:
- Physical Review B, Vol. 97, Issue 4; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 51 works
Citation information provided by
Web of Science
Web of Science
Magnetic structure and excitations of the topological semimetal
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journal | October 2019 |
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