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Title: Signatures of possible surface states in TaAs

Abstract

In this work, we study Shubnikov-de Haas oscillations in single crystals of TaAs and find a previously undetected two-dimensional quantum oscillation that does not belong to the bulk Fermi surface. We cannot find an impurity phase consistent with our observations, and extensive diffraction measurements have not shown the presence of known impurity phases. We conjecture that the frequency originates from surface states that are sensitive to surface disorder. One candidate is the interference of coherent quasiparticles traversing two distinct Fermi arcs on the [001] crystallographic surface. The frequency and effective mass quantitatively agree with predictions of density functional theory and previous angle-resolved photoemission spectroscopy measurements of the Fermi arcs.

Authors:
 [1]; ORCiD logo [2];  [2];  [1];  [1];  [3]; ORCiD logo [4];  [5];  [1];  [6];  [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  2. Univ. de Sherbrooke, QC (Canada)
  3. Univ. de Sherbrooke, QC (Canada); Univ. Paris-Saclay, Gif-sur-Yvette (France)
  4. Lab. National des Champs Magnétiques Intenses, Toulouse (France); AGH Univ. of Science and Technology, Krakow (Poland)
  5. Lab. National des Champs Magnétiques Intenses, Toulouse (France); Canadian Inst. for Advanced Research, Toronto, ON (Canada)
  6. Univ. de Sherbrooke, QC (Canada); Canadian Inst. for Advanced Research, Toronto, ON (Canada)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Gordon and Betty Moore Foundation; National Science Foundation (NSF)
OSTI Identifier:
1671766
Grant/Contract Number:  
AC02-05CH11231; 1607753; GBMF4374; DGE 1106400
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 102; Journal Issue: 7; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
Shubnikov-de Haas effect; surface states; topological materials

Citation Formats

Nair, Nityan L., Boulanger, Marie-Eve, Laliberté, Francis, Griffin, Sinead, Channa, Sanyum, Legros, Anaelle, Tabis, Wojciech, Proust, Cyril, Neaton, Jeffrey, Taillefer, Louis, and Analytis, James G. Signatures of possible surface states in TaAs. United States: N. p., 2020. Web. doi:10.1103/physrevb.102.075402.
Nair, Nityan L., Boulanger, Marie-Eve, Laliberté, Francis, Griffin, Sinead, Channa, Sanyum, Legros, Anaelle, Tabis, Wojciech, Proust, Cyril, Neaton, Jeffrey, Taillefer, Louis, & Analytis, James G. Signatures of possible surface states in TaAs. United States. doi:10.1103/physrevb.102.075402.
Nair, Nityan L., Boulanger, Marie-Eve, Laliberté, Francis, Griffin, Sinead, Channa, Sanyum, Legros, Anaelle, Tabis, Wojciech, Proust, Cyril, Neaton, Jeffrey, Taillefer, Louis, and Analytis, James G. Mon . "Signatures of possible surface states in TaAs". United States. doi:10.1103/physrevb.102.075402.
@article{osti_1671766,
title = {Signatures of possible surface states in TaAs},
author = {Nair, Nityan L. and Boulanger, Marie-Eve and Laliberté, Francis and Griffin, Sinead and Channa, Sanyum and Legros, Anaelle and Tabis, Wojciech and Proust, Cyril and Neaton, Jeffrey and Taillefer, Louis and Analytis, James G.},
abstractNote = {In this work, we study Shubnikov-de Haas oscillations in single crystals of TaAs and find a previously undetected two-dimensional quantum oscillation that does not belong to the bulk Fermi surface. We cannot find an impurity phase consistent with our observations, and extensive diffraction measurements have not shown the presence of known impurity phases. We conjecture that the frequency originates from surface states that are sensitive to surface disorder. One candidate is the interference of coherent quasiparticles traversing two distinct Fermi arcs on the [001] crystallographic surface. The frequency and effective mass quantitatively agree with predictions of density functional theory and previous angle-resolved photoemission spectroscopy measurements of the Fermi arcs.},
doi = {10.1103/physrevb.102.075402},
journal = {Physical Review B},
number = 7,
volume = 102,
place = {United States},
year = {2020},
month = {8}
}

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