Signatures of possible surface states in TaAs

被引：13

作者：

Nair, Nityan L. ^{[1
,2
]}

Boulanger, Marie-Eve ^{[3
,4
]}

Laliberte, Francis ^{[3
,4
]}

Griffin, Sinead ^{[1
,2
]}

Channa, Sanyum ^{[1
,2
]}

Legros, Anaelle ^{[3
,4
,5
]}

Tabis, Wojciech ^{[3
,4
,7
]}

Proust, Cyril ^{[6
,8
]}

Neaton, Jeffrey ^{[1
,2
]}

Taillefer, Louis ^{[3
,4
,8
]}

Analytis, James G. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA

[3] Univ Sherbrooke, Inst Quant, Dept Phys, Sherbrooke, PQ J1K 2R1, Canada

[4] Univ Sherbrooke, RQMP, Sherbrooke, PQ J1K 2R1, Canada

[5] Univ Paris Saclay, CNRS, CEA, Serv Phys Etat Condense,CEA Saclay, F-91191 Gif Sur Yvette, France

[6] UJF, UPS, EMFL, Lab Natl Champs Magnet Intenses,CNRS,INSA, F-31400 Toulouse, France

[7] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

[8] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 07期

基金：

美国国家科学基金会;

关键词：

MAGNETIC-BREAKDOWN; QUANTUM INTERFERENCE; SEMIMETAL; OSCILLATION; PHASE;

D O I：

10.1103/PhysRevB.102.075402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页数：9

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