Extremely Large Magnetoresistance in a Topological Semimetal Candidate Pyrite PtBi2

Wenshuai Gao; Ningning Hao; Fa Wei Zheng; Wei Ning; Min Wu; Xiangde Zhu; Guolin Zheng; Jinglei Zhang; Jianwei Lu; Hongwei Zhang; Chuanying Xi; Jiyong Yang; Haifeng Du; Ping Zhang; Yuheng Zhang; Mingliang Tian

doi:10.1103/PhysRevLett.118.256601

Extremely Large Magnetoresistance in a Topological Semimetal Candidate Pyrite PtBi2

Wenshuai Gao, Ningning Hao, Fa Wei Zheng, Wei Ning, Min Wu, Xiangde Zhu, Guolin Zheng, Jinglei Zhang, Jianwei Lu, Hongwei Zhang, Chuanying Xi, Jiyong Yang, Haifeng Du, Ping Zhang, Yuheng Zhang, Mingliang Tian

Research output: Contribution to journal › Article › peer-review

123 Citations (Scopus)

Abstract

While pyrite-type PtBi2 with a face-centered cubic structure has been predicted to be a three-dimensional (3D) Dirac semimetal, experimental study of its physical properties remains absent. Here we report the angular-dependent magnetoresistance measurements of a PtBi2 single crystal under high magnetic fields. We observed extremely large unsaturated magnetoresistance (XMR) up to (11.2×106)% at T=1.8 K in a magnetic field of 33 T, which is comparable to the previously reported Dirac materials, such as WTe2, LaSb, and NbP. The crystals exhibit an ultrahigh mobility and significant Shubnikov-de Hass quantum oscillations with a nontrivial Berry phase. The analysis of Hall resistivity indicates that the XMR can be ascribed to the nearly compensated electron and hole. Our experimental results associated with the ab initio calculations suggest that pyrite PtBi2 is a topological semimetal candidate that might provide a platform for exploring topological materials with XMR in noble metal alloys.

Original language	English
Article number	256601
Journal	Physical Review Letters
Volume	118
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.118.256601
Publication status	Published - 23 Jun 2017
Externally published	Yes

Access to Document

10.1103/PhysRevLett.118.256601

Cite this

@article{00962f97dccc460383af72fdcc54997d,

title = "Extremely Large Magnetoresistance in a Topological Semimetal Candidate Pyrite PtBi2",

abstract = "While pyrite-type PtBi2 with a face-centered cubic structure has been predicted to be a three-dimensional (3D) Dirac semimetal, experimental study of its physical properties remains absent. Here we report the angular-dependent magnetoresistance measurements of a PtBi2 single crystal under high magnetic fields. We observed extremely large unsaturated magnetoresistance (XMR) up to (11.2×106)% at T=1.8 K in a magnetic field of 33 T, which is comparable to the previously reported Dirac materials, such as WTe2, LaSb, and NbP. The crystals exhibit an ultrahigh mobility and significant Shubnikov-de Hass quantum oscillations with a nontrivial Berry phase. The analysis of Hall resistivity indicates that the XMR can be ascribed to the nearly compensated electron and hole. Our experimental results associated with the ab initio calculations suggest that pyrite PtBi2 is a topological semimetal candidate that might provide a platform for exploring topological materials with XMR in noble metal alloys.",

author = "Wenshuai Gao and Ningning Hao and Zheng, {Fa Wei} and Wei Ning and Min Wu and Xiangde Zhu and Guolin Zheng and Jinglei Zhang and Jianwei Lu and Hongwei Zhang and Chuanying Xi and Jiyong Yang and Haifeng Du and Ping Zhang and Yuheng Zhang and Mingliang Tian",

note = "Publisher Copyright: {\textcopyright} 2017 American Physical Society.",

year = "2017",

month = jun,

day = "23",

doi = "10.1103/PhysRevLett.118.256601",

language = "English",

volume = "118",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "25",

}

TY - JOUR

T1 - Extremely Large Magnetoresistance in a Topological Semimetal Candidate Pyrite PtBi2

AU - Gao, Wenshuai

AU - Hao, Ningning

AU - Zheng, Fa Wei

AU - Ning, Wei

AU - Wu, Min

AU - Zhu, Xiangde

AU - Zheng, Guolin

AU - Zhang, Jinglei

AU - Lu, Jianwei

AU - Zhang, Hongwei

AU - Xi, Chuanying

AU - Yang, Jiyong

AU - Du, Haifeng

AU - Zhang, Ping

AU - Zhang, Yuheng

AU - Tian, Mingliang

PY - 2017/6/23

Y1 - 2017/6/23

N2 - While pyrite-type PtBi2 with a face-centered cubic structure has been predicted to be a three-dimensional (3D) Dirac semimetal, experimental study of its physical properties remains absent. Here we report the angular-dependent magnetoresistance measurements of a PtBi2 single crystal under high magnetic fields. We observed extremely large unsaturated magnetoresistance (XMR) up to (11.2×106)% at T=1.8 K in a magnetic field of 33 T, which is comparable to the previously reported Dirac materials, such as WTe2, LaSb, and NbP. The crystals exhibit an ultrahigh mobility and significant Shubnikov-de Hass quantum oscillations with a nontrivial Berry phase. The analysis of Hall resistivity indicates that the XMR can be ascribed to the nearly compensated electron and hole. Our experimental results associated with the ab initio calculations suggest that pyrite PtBi2 is a topological semimetal candidate that might provide a platform for exploring topological materials with XMR in noble metal alloys.

AB - While pyrite-type PtBi2 with a face-centered cubic structure has been predicted to be a three-dimensional (3D) Dirac semimetal, experimental study of its physical properties remains absent. Here we report the angular-dependent magnetoresistance measurements of a PtBi2 single crystal under high magnetic fields. We observed extremely large unsaturated magnetoresistance (XMR) up to (11.2×106)% at T=1.8 K in a magnetic field of 33 T, which is comparable to the previously reported Dirac materials, such as WTe2, LaSb, and NbP. The crystals exhibit an ultrahigh mobility and significant Shubnikov-de Hass quantum oscillations with a nontrivial Berry phase. The analysis of Hall resistivity indicates that the XMR can be ascribed to the nearly compensated electron and hole. Our experimental results associated with the ab initio calculations suggest that pyrite PtBi2 is a topological semimetal candidate that might provide a platform for exploring topological materials with XMR in noble metal alloys.

UR - http://www.scopus.com/inward/record.url?scp=85021320010&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.118.256601

DO - 10.1103/PhysRevLett.118.256601

M3 - Article

C2 - 28696743

AN - SCOPUS:85021320010

SN - 0031-9007

VL - 118

JO - Physical Review Letters

JF - Physical Review Letters

IS - 25

M1 - 256601

ER -

Extremely Large Magnetoresistance in a Topological Semimetal Candidate Pyrite PtBi2

Abstract

Access to Document

Other files and links

Fingerprint

Cite this