On the peculiarities of galvanomagnetic effects in high magnetic fields in twisting bicrystals of the 3D topological insulator Bi1-x Sb x (0.07 ≤ x ≤ 0.2)

被引：0

作者：

Muntyanu, F. M. ^{[1
,2
]}

Gheorghitsa, E. I. ^{[3
]}

Gilewski, A. ^{[2
]}

Chistol, V. ^{[4
]}

Bejan, V. ^{[3
]}

Munteanu, V. ^{[1
]}

机构：

[1] Moldavian Acad Sci, Inst Elect Engn & Ind Technol, MD-2028 Kishinev, Moldova

[2] Int Lab High Magnet Fields & Low Temp, PL-53421 Wroclaw, Poland

[3] Tech Univ Moldova, MD-2004 Kishinev, Moldova

[4] Tiraspol State Univ, MD-2069 Kishinev, Moldova

来源：

SEMICONDUCTORS | 2017年 / 51卷 / 04期

关键词：

SUPERCONDUCTING CRYSTALLITE INTERFACES; QUANTUM OSCILLATIONS; EXCITONIC INSULATOR; PHASE; BI; TRANSITION; PHYSICS;

D O I：

10.1134/S1063782617040157

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Galvanomagnetic effects in twisting bicrystals of Bi1-x Sb (x) alloys (0.07 x 0.2) at low temperatures and in magnetic fields up to 40 T are studied. It is found that, at small crystallite misorientation angles, the semiconductor-semimetal transition is induced in the central layer (similar to 60-nm-thick) and two adjacent layers (each similar to 20-nm-thick) of the interface at different values of ultraquantum magnetic field. Bicrystals with large misorientation angles, being located in strong magnetic fields, exhibit quantum oscillations of the magnetoresistance and the Hall effect, thus indicating that the density of states is higher and charge carriers are heavier in the adjacent layers of the interfaces than in the crystallites. Our results show also that twisting bicrystals contain regions with different densities of quantum electronic states, which are determined by the crystallite misorientation angle and magnetic-field strength.

引用

页码：413 / 416

页数：4

共 14 条

[11] Synthesis of Dense Fine-Grained Ceramics by Sol-Gel Technique of RE-substituted Bi1-x A x FeO3 Nanopowders (A = La3+, Y3+, Dy3+, Ce3+): Structural, Electrical, and Magnetic Characterization [J].

Garcia-Zaleta, D. S. ;

Torres-Huerta, A. M. ;

Dominguez-Crespo, M. A. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2016, 47A (04) :1720-1728

[12] Compositional Design of Soft Magnetic High Entropy Alloys by Minimizing Magnetostriction Coefficient in (Fe0.3Co0.5Ni0.2)100-x(Al1/3Si2/3)x System [J].

Zhang, Yong ;

Zhang, Min ;

Li, Dongyue ;

Zuo, Tingling ;

Zhou, Kaixuan ;

Gao, Michael C. ;

Sun, Baoru ;

Shen, Tongde .

METALS, 2019, 9 (03)

[13] The effects of Si doping on the thermoelectric and magnetic properties of Ca0.98Bi0.02Mn1-xSixO3-δ with x=0.00, 0.02 and 0.03 [J].

Bhaskar, Ankam ;

Yuan, J. J. ;

Liu, Chia-Jyi .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2014, 186 :48-53

[14] Composition induced rhombohedral-tetragonal phase boundary and high piezoelectric activity in (K0.48,Na0.52) (Nb(1-x)Sbx)O3-0.05Ca0.2(Bi0.5,Na0.5) 0.8ZrO3 lead-free piezoelectric ceramics [J].

Pan, Di ;

Guo, Yiping ;

Fu, Xiuwu ;

Guo, Runjiang ;

Duan, Huanan ;

Chen, Yujie ;

Li, Hua ;

Liu, Hezhou .

SOLID STATE COMMUNICATIONS, 2017, 259 :29-33

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