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Title: Large magnetoresistance in the antiferromagnetic semimetal NdSb

Journal Article · · Physical Review B
 [1];  [1];  [2];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Univ. of Central Florida, Orlando, FL (United States). Dept. of Physics

There has been considerable interest in topological semimetals that exhibit extreme magnetoresistance (XMR). These have included materials lacking inversion symmetry such as TaAs, as well Dirac semimetals such as Cd3As2. However, it was reported recently that LaSb and LaBi also exhibit XMR, even though the rocksalt structure of these materials has inversion symmetry, and the band-structure calculations do not show a Dirac dispersion in the bulk. In this paper, we present magnetoresistance and specific-heat measurements on NdSb, which is isostructural with LaSb. NdSb has an antiferromagnetic ground state and, in analogy with the lanthanum monopnictides, is expected to be a topologically nontrivial semimetal. We show that NdSb has an XMR of ~104%, even within the antiferromagnetic state, illustrating that XMR can occur independently of the absence of time-reversal symmetry breaking in zero magnetic field. The persistence of XMR in a magnetic system offers the promise of new functionality when combining topological matter with electronic correlations. Finally, we also find that in an applied magnetic field below the Néel temperature there is a first-order transition, consistent with evidence from previous neutron scattering work.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC); LANL Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1409760
Alternate ID(s):
OSTI ID: 1254680
Report Number(s):
LA-UR-16-21357
Journal Information:
Physical Review B, Vol. 93, Issue 20; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 50 works
Citation information provided by
Web of Science

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Tunable electronic structure and topological properties of LnPn (Ln=Ce, Pr, Sm, Gd, Yb; Pn=Sb, Bi) journal November 2018
Extreme magnetoresistance and SdH oscillation in compensated semimetals of NbSb 2 single crystals journal April 2018
Extreme magnetoresistance and Shubnikov-de Haas oscillations in ferromagnetic DySb journal August 2018
Comparative study of the compensated semi-metals LaBi and LuBi: a first-principles approach journal April 2018
First principles investigation of topological phase in XMR material TmSb under hydrostatic pressure journal May 2019
Revealing ‘plasmaron’ feature in DySb by optical spectroscopy study journal July 2019
Optical spectroscopy study of the topological property in PrSb journal September 2019
Probing the Fermi surface and magnetotransport properties of MoAs 2 journal April 2018
Extremely large magnetoresistance in the topologically trivial semimetal α WP 2 journal June 2018
Magnetotransport properties of the correlated topological nodal-line semimetal YbCdGe journal June 2019
Extreme Magnetoresistance in Magnetic Rare Earth Monopnictides text January 2017
Magnetoresistance in YBi and LuBi semimetals due to nearly perfect carrier compensation text January 2017
Tunable Electronic Structure and Topological Properties of $LnPn$ ($Ln$=Ce, Pr, Gd, Sm, Yb; $Pn$=Sb, Bi) text January 2018
Comparative study of the compensated semi-metals LaBi and LuBi : A first-principles approach text January 2018
First principles investigation of topological phase in XMR material TmSb under hydrostatic pressure text January 2019