Observation of negative longitudinal magnetoresistance in the type-II Dirac semimetal PtSe2

被引：27

作者：

Li, Zhaoguo ^{[1
]}

Zeng, Yong ^{[1
]}

Zhang, Jicheng ^{[1
]}

Zhou, Minjie ^{[1
]}

Wu, Weidong ^{[1
]}

机构：

[1] China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621900, Peoples R China

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 16期

基金：

中国国家自然科学基金;

关键词：

WEYL FERMIONS; CHIRALITY; DEVICES;

D O I：

10.1103/PhysRevB.98.165441

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The negative longitudinal magnetoresistance (NLMR) was observed in type-II Dirac semimetal PtSe2 ultrathin microflakes. The NLMR disappeared when the magnetic field direction deviates from that of the electric field, or when the temperature is above a critical value, even when the Fermi level is away from Dirac point. The physical mechanism behind NLMR may relate to the chiral anomaly of Dirac fermions or the nontopological effect in PtSe2 material.

引用

页数：9

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