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Title: Unusual interlayer quantum transport behavior caused by the zeroth Landau level in YbMnBi2

Journal Article · · Nature Communications
 [1]; ORCiD logo [1];  [2];  [3];  [3];  [4];  [5];  [6];  [5];  [6];  [7];  [3];  [1]
  1. Tulane Univ., New Orleans, LA (United States)
  2. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab. (MagLab)
  3. Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
  4. University of California, Riverside CA (United States)
  5. The Ohio State Univ., Columbus, OH (United States)
  6. University of New Orleans (United States)
  7. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division

Relativistic fermions in topological quantum materials are characterized by linear energy–momentum dispersion near band crossing points. Under magnetic fields, relativistic fermions acquire Berry phase of π in cyclotron motion, leading to a zeroth Landau level (LL) at the crossing point, a signature unique to relativistic fermions. Here we report the unusual interlayer quantum transport behavior resulting from the zeroth LL mode observed in the time reversal symmetry breaking type II Weyl semimetal YbMnBi2. The interlayer magnetoresistivity and Hall conductivity of this material are found to exhibit surprising angular dependences under high fields, which can be well fitted by a model, which considers the interlayer quantum tunneling transport of the zeroth LL's Weyl fermions. Our results shed light on the unusual role of zeroth LLl mode in transport.

Research Organization:
Louisiana State Univ., Baton Rouge, LA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Science Foundation (NSF)
Grant/Contract Number:
SC0012432; SC0010597; DMR-1206267
OSTI ID:
1602030
Journal Information:
Nature Communications, Vol. 8, Issue 1; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

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Cited By (10)

Magneto-conductivity of tilted type-I Weyl semimetals with different types of impurities journal April 2019
Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi text January 2017
Highly anisotropic interlayer magnetoresistance in ZrSiS nodal-line Dirac semimetal text January 2019
Magnetic structure and excitations of the topological semimetal YbMnBi 2 journal October 2019
Evidence for Weyl fermions in a canonical heavy-fermion semimetal YbPtBi journal November 2018
A magnetic topological semimetal Sr1−yMn1−zSb2 (y, z < 0.1) journal July 2017
Magnetization-governed magnetoresistance anisotropy in the topological semimetal CeBi journal November 2019
Dirac fermions and possible weak antilocalization in LaCuSb 2 journal December 2019
Magnetotransport evidence for topological phase transition in a Dirac semimetal journal October 2019
Dirac Fermions and Possible Weak Antilocalization in LaCuSb$_{2}$ text January 2020

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