Molecular beam epitaxy growth of nonmagnetic Weyl semimetal LaAlGe thin film

被引：9

作者：

Bhattarai, Niraj ^{[1
,2
]}

Forbes, Andrew W. ^{[1
,2
]}

Dulal, Rajendra P. ^{[3
]}

Pegg, Ian L. ^{[1
,2
]}

Philip, John ^{[1
,2
]}

机构：

[1] Catholic Univ Amer, Dept Phys, Washington, DC 20064 USA

[2] Catholic Univ Amer, Vitreous State Lab, Washington, DC 20064 USA

[3] Chapman Univ, Inst Quantum Phys, Adv Phys Lab, Burtonsville, MD 20866 USA

来源：

MRS COMMUNICATIONS | 2020年 / 10卷 / 02期

关键词：

Germanium alloys - Topography - Lanthanum compounds - Aluminum compounds - Molecular beams - Film growth - Crystal structure - Phonons - Thin films;

D O I：

10.1557/mrc.2020.28

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here, the authors report a detailed method of growing LaAlGe, a nonmagnetic Weyl semimetal, thin film on silicon(100) substrates by molecular beam epitaxy and their structural and electrical characterizations. About 50-nm-thick LaAlGe films were deposited and annealed for 16 h in situ at a temperature of 793 K. As-grown high-quality films showed uniform surface topography and near ideal stoichiometry with a body-centered tetragonal crystal structure. Temperature-dependent longitudinal resistivity can be understood with dominant interband s-d electron-phonon scattering in the temperature range of 5-40 K. Hall measurements confirmed the semimetallic nature of the films with an electron-dominated charge carrier density of similar to 7.15 x 10(21) cm(-3) at 5 K.

引用

页码：272 / 277

页数：6

共 29 条

[1] ELECTRICAL RESISTIVITY DUE TO ELECTRON PHONON SCATTERING IN YTTRIUM AND LUTETIUM [J].

ARAJS, S ;

COLVIN, RV .

JOURNAL OF THE LESS-COMMON METALS, 1962, 4 (06) :572-578

[2] Quantum supremacy using a programmable superconducting processor [J].

Arute, Frank ;

Arya, Kunal ;

Babbush, Ryan ;

Bacon, Dave ;

Bardin, Joseph C. ;

Barends, Rami ;

Biswas, Rupak ;

Boixo, Sergio ;

Brandao, Fernando G. S. L. ;

Buell, David A. ;

Burkett, Brian ;

Chen, Yu ;

Chen, Zijun ;

Chiaro, Ben ;

Collins, Roberto ;

Courtney, William ;

Dunsworth, Andrew ;

Farhi, Edward ;

Foxen, Brooks ;

Fowler, Austin ;

Gidney, Craig ;

Giustina, Marissa ;

Graff, Rob ;

Guerin, Keith ;

Habegger, Steve ;

Harrigan, Matthew P. ;

Hartmann, Michael J. ;

Ho, Alan ;

Hoffmann, Markus ;

Huang, Trent ;

Humble, Travis S. ;

Isakov, Sergei V. ;

Jeffrey, Evan ;

Jiang, Zhang ;

Kafri, Dvir ;

Kechedzhi, Kostyantyn ;

Kelly, Julian ;

Klimov, Paul V. ;

Knysh, Sergey ;

Korotkov, Alexander ;

Kostritsa, Fedor ;

Landhuis, David ;

Lindmark, Mike ;

Lucero, Erik ;

Lyakh, Dmitry ;

Mandra, Salvatore ;

McClean, Jarrod R. ;

McEwen, Matthew ;

Megrant, Anthony ;

Mi, Xiao .

NATURE, 2019, 574 (7779) :505-+

[3] Transport characteristics of type II Weyl semimetal MoTe2 thin films grown by chemical vapor deposition [J].

Bhattarai, Niraj ;

Forbes, Andrew W. ;

Dulal, Rajendra ;

Pegg, Ian ;

Philip, John .

JOURNAL OF MATERIALS RESEARCH, 2020, 35 (05) :454-461

[4] Magnetic and noncentrosymmetricWeyl fermion semimetals in the RAlGe family of compounds (R = rare earth) [J].

Chang, Guoqing ;

Singh, Bahadur ;

Xu, Su-Yang ;

Bian, Guang ;

Huang, Shin-Ming ;

Hsu, Chuang-Han ;

Belopolski, Ilya ;

Alidoust, Nasser ;

Sanchez, Daniel S. ;

Zheng, Hao ;

Lu, Hong ;

Zhang, Xiao ;

Bian, Yi ;

Chang, Tay-Rong ;

Jeng, Horng-Tay ;

Bansil, Arun ;

Hsu, Han ;

Jia, Shuang ;

Neupert, Titus ;

Lin, Hsin ;

Hasan, M. Zahid .

PHYSICAL REVIEW B, 2018, 97 (04)

[5] Large magnetoresistance and superconductivity in α-gallium single crystals [J].

Chen, Bin ;

Duan, Xu ;

Wang, Hangdong ;

Du, Jianhua ;

Zhou, Yuxing ;

Xu, Chunqiang ;

Zhang, Yukun ;

Zhang, Liyao ;

Wei, Meng ;

Xia, Zhengcai ;

Cao, Chao ;

Dai, Jianhui ;

Fang, Minghu ;

Yang, Jinhu .

NPJ QUANTUM MATERIALS, 2018, 3

[6] Magnetism and anomalous transport in the Weyl semimetal PrAlGe: possible route to axial gauge fields [J].

Destraz, Daniel ;

Das, Lakshmi ;

Tsirkin, Stepan S. ;

Xu, Yang ;

Neupert, Titus ;

Chang, J. ;

Schilling, A. ;

Grushin, Adolfo G. ;

Kohlbrecher, Joachim ;

Keller, Lukas ;

Puphal, Pascal ;

Pomjakushina, Ekaterina ;

White, Jonathan S. .

NPJ QUANTUM MATERIALS, 2020, 5 (01)

[7] Superconducting fluctuations in a thin NbN film probed by the Hall effect [J].

Destraz, Daniel ;

Ilin, Konstantin ;

Siegel, Michael ;

Schilling, Andreas ;

Chang, Johan .

PHYSICAL REVIEW B, 2017, 95 (22)

[8] Weak localization and small anomalous Hall conductivity in ferromagnetic Weyl semimetal Co2TiGe [J].

Dulal, Rajendra P. ;

Dahal, Bishnu R. ;

Forbes, Andrew ;

Bhattarai, Niraj ;

Pegg, Ian L. ;

Philip, John .

SCIENTIFIC REPORTS, 2019, 9 (1)

[9] Experimental realization and magnetotransport properties of half-metallic Fe2Si [J].

Forbes, Andrew W. ;

Dulal, Rajendra P. ;

Bhattarai, Niraj ;

Pegg, Ian L. ;

Philip, John .

JOURNAL OF APPLIED PHYSICS, 2019, 125 (24)

[10] SYNTHESES AND STRUCTURES OF LAGE2-X AND LAALGE - INTERRELATIONSHIPS AMONG THE ALPHA-THSI2, ALPHA-GDSI2, AND LAPTSI STRUCTURE TYPES [J].

GULOY, AM ;

CORBETT, JD .

INORGANIC CHEMISTRY, 1991, 30 (25) :4789-4794

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