Breakdown of three-dimensional Dirac semimetal state in pressurized Cd3As2

被引：50

作者：

Zhang, Shan ^{[1
,2
]}

Wu, Qi ^{[1
,2
]}

Schoop, Leslie ^{[3
]}

Ali, Mazhar N. ^{[3
]}

Shi, Youguo ^{[1
,2
]}

Ni, Ni ^{[4
]}

Gibson, Quinn ^{[3
]}

Jiang, Shang ^{[4
]}

Sidorov, Vladimir ^{[5
]}

Yi, Wei ^{[1
,2
]}

Guo, Jing ^{[1
,2
]}

Zhou, Yazhou ^{[1
,2
]}

Wu, Desheng ^{[1
,2
]}

Gao, Peiwen ^{[1
,2
]}

Gu, Dachun ^{[1
,2
]}

Zhang, Chao ^{[1
,2
]}

Jiang, Sheng ^{[6
]}

Yang, Ke ^{[6
]}

Li, Aiguo ^{[6
]}

Li, Yanchun ^{[7
]}

Li, Xiaodong ^{[7
]}

Liu, Jing ^{[7
]}

Dai, Xi ^{[1
,2
,8
]}

Fang, Zhong ^{[1
,2
,8
]}

Cava, Robert J. ^{[3
]}

Sun, Liling ^{[1
,2
,8
]}

Zhao, Zhongxian ^{[1
,2
,8
]}

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China

[3] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[4] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[5] Russian Acad Sci, Inst High Pressure Phys, Moscow 142190, Russia

[6] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

[7] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China

[8] Collaborat Innovat Ctr Quantum Matter, Beijing 100190, Peoples R China

来源：

PHYSICAL REVIEW B | 2015年 / 91卷 / 16期

关键词：

LOW-TEMPERATURES; INSULATOR; MOBILITY; SURFACE; PHASE; HEAT;

D O I：

10.1103/PhysRevB.91.165133

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report an observation of a pressure-induced breakdown of the three-dimensional Dirac semimetal (3DDSM) state in Cd3As2, evidenced by a series of in situ high-pressure synchrotron x-ray diffraction and single-crystal transport measurements. We find that Cd3As2 undergoes a structural phase transition from a metallic tetragonal phase in space group I4(1)/acd to a semiconducting monoclinic phase in space group P2(1)/c at critical pressure 2.57 GPa; above this pressure, an activation energy gap appears, accompanied by distinct switches in Hall resistivity slope and electron mobility. These changes of crystal symmetry and corresponding transport properties manifest the breakdown of the 3DDSM state in pressurized Cd3As2.

引用

页数：5

共 41 条

[1] The Crystal and Electronic Structures of Cd3As2, the Three-Dimensional Electronic Analogue of Graphene [J].

Ali, Mazhar N. ;

Gibson, Quinn ;

Jeon, Sangjun ;

Zhou, Brian B. ;

Yazdani, Ali ;

Cava, R. J. .

INORGANIC CHEMISTRY, 2014, 53 (08) :4062-4067

[2]

[Anonymous], ARXIV14056611

[3]

Banus M. D., 1969, High Temperatures - High Pressures, V1, P269

[4] Experimental Realization of a Three-Dimensional Dirac Semimetal [J].

Borisenko, Sergey ;

Gibson, Quinn ;

Evtushinsky, Danil ;

Zabolotnyy, Volodymyr ;

Buechner, Bernd ;

Cava, Robert J. .

PHYSICAL REVIEW LETTERS, 2014, 113 (02)

[5] Topological nodal semimetals [J].

Burkov, A. A. ;

Hook, M. D. ;

Balents, Leon .

PHYSICAL REVIEW B, 2011, 84 (23)

[6]

Cao J., ARXIV14120824

[7] ENERGY-BAND STRUCTURE OF CD3AS2 AT LOW-TEMPERATURES AND DEPENDENCE OF DIRECT GAP ON TEMPERATURE AND PRESSURE [J].

CARON, LG ;

JAYGERIN, JP ;

AUBIN, MJ .

PHYSICAL REVIEW B, 1977, 15 (08) :3879-3887

[8]

Cisowski J., 1973, Acta Physica Polonica A, VA43, P295

[9] SPECIFIC-HEAT OF CADMIUM ARSENIDE (CD3AS2) BELOW 30-K [J].

DECOMBARIEU, A ;

JAYGERIN, JP .

PHYSICAL REVIEW B, 1982, 25 (04) :2923-2926

[10] Topological Kondo Insulators [J].

Dzero, Maxim ;

Sun, Kai ;

Galitski, Victor ;

Coleman, Piers .

PHYSICAL REVIEW LETTERS, 2010, 104 (10)

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