Effect of order parameter on the magnetotransport properties of half-Heusler LaPtBi

被引：4

作者：

Narita, Hideki ^{[1
]}

Niimi, Youhei ^{[1
]}

Miyawaki, Tetsuya ^{[1
]}

Tanaka, Nobuo ^{[2
]}

Asano, Hidefumi ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Engn, Dept Crystalline Mat Sci, Nagoya, Aichi 4648603, Japan

[2] Nagoya Univ, EcoTopia Inst, Nagoya, Aichi 4648603, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2015年 / 54卷 / 09期

关键词：

SINGLE DIRAC CONE; TOPOLOGICAL INSULATORS; MAGNETORESISTANCE;

D O I：

10.7567/JJAP.54.093002

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We studied the correlations among the structural properties, valence band spectra, and electrical properties of (111)-oriented half-Heusler LaPtBi thin films. An increase in the C1 order parameter led to a marked change in the valence band spectra just below the Fermi energy, indicating the dominant role of ordering at the Pt sites in the electronic structure of LaPtBi. Magnetotransport measurements at 4.2K showed that the linearity rather than the classic quadratic component of magnetoresistance becomes more evident with increasing C1 order parameter. The unique electronic structure of LaPtBi showed various quantum phenomena related to zero-gap semiconductivity. (C) 2015 The Japan Society of Applied Physics

引用

页数：5

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