Anomalous Hall effect in Cu doped Bi2Te3 topological insulator

被引：7

作者：

Singh, Abhishek ^{[1
]}

Kumar, Shiv ^{[2
]}

Singh, Mahima ^{[1
]}

Singh, Prajyoti ^{[1
]}

Singh, Rahul ^{[1
]}

Gangwar, Vinod K. ^{[1
]}

Lakhani, Archana ^{[3
]}

Patil, Swapnil ^{[1
]}

Schwier, Eike F. ^{[2
]}

Matsumura, Takeshi ^{[4
]}

Shimada, K. ^{[2
]}

Ghosh, A. K. ^{[5
]}

Chatterjee, Sandip ^{[1
]}

机构：

[1] Banaras Hindu Univ, Indian Inst Technol, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[2] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, 2-313 Kagamiyama, Higashihiroshima 7390046, Japan

[3] UGC DAE Consortium Sci Res, Indore 452017, Madhya Pradesh, India

[4] Hiroshima Univ, Dept Quantum Matter, AdSM, Higashihiroshima 7398530, Japan

[5] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2020年 / 32卷 / 30期

基金：

日本学术振兴会;

关键词：

Anomalous Hall effect; topological insulator; angle resolved photo emission spectroscopy; Magnetoresistance; Shubnikov de-Hass (SdH) oscillations; SB2TE3; BI2SE3; STATES;

D O I：

10.1088/1361-648X/ab8521

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The angle resolved photo-emission spectroscopy (ARPES) study and magneto-transport properties of Bi2CuxTe3-x have been investigated. ARPES study indicates the clear existence of surface states in the as-prepared samples. The estimated bandgap from ARPES is found to be similar to 5 meV and 16 meV respectively for x = 0.03 and x = 0.15 samples. Presence of larger Cu concentration (x = 0.15) introduces magnetic ordering. Observed non-linearity in the Hall data is due to the existence of anomalous Hall effect which can be attributed to the 2D transport. The observed magneto-transport features might be related to the surface carriers which is confirmed by ARPES study.

引用

页数：11

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