skip to main content

DOE PAGESDOE PAGES

Title: Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb 2

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.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [1] ;  [5] ;  [5] ;  [3] ;  [4] ;  [6] ;  [1]
  1. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
  2. 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
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
  4. Univ. of Texas, Dallas, TX (United States). Dept. of Chemistry and Biochemistry
  5. Max Planck Inst. for Chemical Physics of Solids, Dresden (Germany)
  6. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source
Publication Date:
Grant/Contract Number:
AC02-05CH11231; DGE-1106400; DMR-1360863; 1607753; GBMF4374
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States); Univ. of Texas, Dallas, TX (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); National Science Foundation (NSF); Gordon and Betty Moore Foundation (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; antiferromagnetism; electronic structure; Fermi surface; magnetotransport; topological materials; topological phases of matter
OSTI Identifier:
1483269
Alternate Identifier(s):
OSTI ID: 1416414

Kealhofer, Robert, Jang, Sooyoung, Griffin, Sinéad M., John, Caolan, Benavides, Katherine A., Doyle, Spencer, Helm, T., Moll, Philip J. W., Neaton, Jeffrey B., Chan, Julia Y., Denlinger, J. D., and Analytis, James G.. Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb2. United States: N. p., Web. doi:10.1103/PhysRevB.97.045109.
Kealhofer, Robert, Jang, Sooyoung, Griffin, Sinéad M., John, Caolan, Benavides, Katherine A., Doyle, Spencer, Helm, T., Moll, Philip J. W., Neaton, Jeffrey B., Chan, Julia Y., Denlinger, J. D., & Analytis, James G.. Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb2. United States. doi:10.1103/PhysRevB.97.045109.
Kealhofer, Robert, Jang, Sooyoung, Griffin, Sinéad M., John, Caolan, Benavides, Katherine A., Doyle, Spencer, Helm, T., Moll, Philip J. W., Neaton, Jeffrey B., Chan, Julia Y., Denlinger, J. D., and Analytis, James G.. 2018. "Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb2". United States. doi:10.1103/PhysRevB.97.045109. https://www.osti.gov/servlets/purl/1483269.
@article{osti_1483269,
title = {Observation of a two-dimensional Fermi surface and Dirac dispersion in YbMnSb2},
author = {Kealhofer, Robert and Jang, Sooyoung and Griffin, Sinéad M. and John, Caolan and Benavides, Katherine A. and Doyle, Spencer and Helm, T. and Moll, Philip J. W. and Neaton, Jeffrey B. and Chan, Julia Y. and Denlinger, J. D. and Analytis, James G.},
abstractNote = {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.},
doi = {10.1103/PhysRevB.97.045109},
journal = {Physical Review B},
number = 4,
volume = 97,
place = {United States},
year = {2018},
month = {1}
}

Works referenced in this record:

Generalized Gradient Approximation Made Simple
journal, October 1996
  • Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias
  • Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868
  • DOI: 10.1103/PhysRevLett.77.3865

Special points for Brillouin-zone integrations
journal, June 1976
  • Monkhorst, Hendrik J.; Pack, James D.
  • Physical Review B, Vol. 13, Issue 12, p. 5188-5192
  • DOI: 10.1103/PhysRevB.13.5188

Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set
journal, October 1996

Crystal structure refinement with SHELXL
journal, January 2015
  • Sheldrick, George M.
  • Acta Crystallographica Section C Structural Chemistry, Vol. 71, Issue 1, p. 3-8
  • DOI: 10.1107/S2053229614024218

Electron-energy-loss spectra and the structural stability of nickel oxide: An LSDA+U study
journal, January 1998
  • Dudarev, S. L.; Botton, G. A.; Savrasov, S. Y.
  • Physical Review B, Vol. 57, Issue 3, p. 1505-1509
  • DOI: 10.1103/PhysRevB.57.1505

SHELXT � Integrated space-group and crystal-structure determination
journal, January 2015
  • Sheldrick, George M.
  • Acta Crystallographica Section A Foundations and Advances, Vol. 71, Issue 1, p. 3-8
  • DOI: 10.1107/S2053273314026370