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Title: Electron-hole compensation effect between topologically trivial electrons and nontrivial holes in NbAs

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics

In this study, via angular Shubnikov–de Haas (SdH) quantum oscillations measurements, we determine the Fermi surface topology of NbAs, a Weyl semimetal candidate. The SdH oscillations consist of two frequencies corresponding to two Fermi surface extrema: 20.8 T (α pocket) and 15.6 T (β pocket). The analysis, including a Landau fan plot, shows that the β pocket has a Berry phase of π and a small effective mass of ~ 0.033 m0, indicative of a nontrivial topology in momentum space, whereas the α pocket has a trivial Berry phase of 0 and a heavier effective mass of ~ 0.066 m0. From the effective mass and the β -pocket frequency, we determine that the Weyl node is 110.5 meV from the chemical potential. An electron-hole compensation effect is discussed in this system, and its impact on magnetotransport properties is addressed. Finally, the difference between NbAs and other monopnictide Weyl semimetals is also discussed.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1467321
Alternate ID(s):
OSTI ID: 1227521
Report Number(s):
LA-UR-15-24779; PRBMDO
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 20; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (31)

Temperature-tunable Fano resonance induced by strong coupling between Weyl fermions and phonons in TaAs journal March 2017
Butterfly magnetoresistance, quasi-2D Dirac Fermi surface and topological phase transition in ZrSiS journal December 2016
Chiral Landau levels in Weyl semimetal NbAs with multiple topological carriers journal May 2018
Quantum transport in topological semimetals under magnetic fields (II) journal April 2019
Ultrahigh conductivity in Weyl semimetal NbAs nanobelts journal March 2019
Symmetry demanded topological nodal-line materials journal January 2018
Possible manifestations of the chiral anomaly and evidence for a magnetic field induced topological phase transition in the type-I Weyl semimetal TaAs journal September 2019
Magnetic Susceptibility of Topological Semimetals journal August 2019
‘Hard’ crystalline lattice in the Weyl semimetal NbAs journal January 2016
Simple mechanisms that impede the Berry phase identification from magneto-oscillations journal May 2018
Optoelectronic response of the type-I Weyl semimetals TaAs and NbAs from first principles journal January 2020
Robust magnetoresistance in TaAs 2 under pressure up to about 37 GPa journal September 2019
Large magnetoresistance in LaBi: origin of field-induced resistivity upturn and plateau in compensated semimetals journal August 2016
Distinct Electronic Structure for the Extreme Magnetoresistance in YSb journal December 2016
Anomalous electronic structure and magnetoresistance in TaAs2 journal June 2016
Crystal growth of Dirac semimetal ZrSiS with high magnetoresistance and mobility journal January 2017
Inducing superconductivity in Weyl semimetal microstructures by selective ion sputtering journal May 2017
Quantum oscillations in acoustic phonons in Weyl semimetals journal February 2020
"Hard" crystalline lattice in the Weyl semimetal NbAs text January 2015
Anomalous electronic structure and magnetoresistance in TaAs$_2$ text January 2016
Signature of chiral fermion instability in the Weyl semimetal TaAs above the quantum limit text January 2016
Anomalous Phase Shift of Quantum Oscillations in 3D Topological Semimetals text January 2016
Distinct Electronic Structure for the Extreme Magnetoresistance in YSb text January 2016
Temperature-tunable Fano resonance induced by strong coupling between Weyl fermions and phonons in TaAs text January 2016
Inducing superconductivity in Weyl semi-metal microstructures by selective ion sputtering text January 2017
Symmetry Demanded Topological Nodal-line Materials text January 2017
Rules for Phase Shifts of Quantum Oscillations in Topological Nodal-line Semimetals text January 2018
Simple mechanisms that impede the Berry phase identification from magneto-oscillations text January 2018
Chiral Landau levels in Weyl semimetal NbAs with multiple topological carriers text January 2018
Magnetic susceptibility of topological semimetals text January 2019
Robust magnetoresistance in TaAs2 under pressure up to about 37 GPa text January 2019

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