Quantitative evaluation of Dirac physics in PbTe

被引：15

作者：

Akiba, Kazuto ^{[1
,5
]}

Miyake, Atsushi ^{[1
]}

Sakai, Hideaki ^{[2
,3
]}

Katayama, Keisuke ^{[2
]}

Murakawa, Hiroshi ^{[2
]}

Hanasaki, Noriaki ^{[2
]}

Takaoka, Sadao ^{[2
]}

Nakanishi, Yoshiki ^{[4
]}

Yoshizawa, Masahito ^{[4
]}

Tokunaga, Masashi ^{[1
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan

[3] JST PRESTO, Kawaguchi, Saitama 3320012, Japan

[4] Iwate Univ, Fac Sci & Engn, Grad Sch Engn, Morioka, Iwate 0208551, Japan

[5] Okayama Univ, Dept Phys, Okayama 7008530, Japan

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 11期

关键词：

TOPOLOGICAL FERMI ARCS; P-TYPE PBTE; SEMIMETAL CD3AS2; BERRYS PHASE; MAGNETORESISTANCE; DISCOVERY; MOBILITY; SURFACE;

D O I：

10.1103/PhysRevB.98.115144

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic field dependence of electronic transport, magnetic, and elastic properties in single crystals of PbTe were investigated in high magnetic fields up to 55 T. The magnetoresistance, magnetization, ultrasonic attenuation, and sound velocity showed clear quantum oscillations with pronounced Zeeman splitting, which causes a large second harmonic in the frequency spectra. The ratio of the Zeeman to the cyclotron energy, which is regarded as an index of "Diracness" [H. Hayasaka and Y. Fuseya, J. Phys.: Condens. Matter 28, 31LT01 (2016)], was determined to be 0.52 and 0.57 in samples with different carrier densities. We also pointed out that the effect of Zeeman splitting seriously affects the Landau-level fan diagram analysis, which is widely used to extract the nontrivial Berry's phase from the quantum oscillations.

引用

页数：11

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