Single crystal growth and ferromagnetism of Cr-doped Sb4Te3

被引：2

作者：

Wu, Yuelong ^{[1
]}

Wang, Shijie ^{[1
]}

Wang, Xiaoxiong ^{[1
]}

Long, Yun-Ze ^{[1
]}

Xue, Mianqi ^{[2
]}

Teng, Bing ^{[1
]}

Chen, Dong ^{[1
]}

机构：

[1] Qingdao Univ, Coll Phys, Qingdao 266071, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2020年 / 32卷 / 23期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

ferromagnetism; single crystal growth; anomalous Hall effect; DIRAC FERMIONS; SB-TE; SERIES; STATE;

D O I：

10.1088/1361-648X/ab73a7

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Here we report the single crystal growth, magnetic and transport properties of Cr-doped Sb4Te3, (Sb1-xCrx)(4)Te-3, with doping concentrations x = 0.25%, 0.5%, 0.75%, and 1%. The samples with lower doping concentrations are paramagnetic, while ferromagnetism appears in higher doped samples with the highest Curie temperature of 7 K when x = 1%. Anomalous Hall effect with clear hysteresis loop is observed in the samples with x = 1%, indicating the intrinsic ferromagnetism in the system. Hall resistivity measurements show the dominant charge carriers are holes and the density of holes increases with the doping concentration. This work provides a possible single-crystalline platform for further experimental researches on the nontrivial band topology in Sb4Te3, and enriches the ferromagnetic members in the transition metal doped (Sb-2)(m)-Sb2Te3 topological material series.

引用

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