磁电阻
弱局部化
凝聚态物理
去相
角分辨光电子能谱
散射
X射线光电子能谱
光电发射光谱学
磁场
兴奋剂
材料科学
顺磁性
物理
电子结构
核磁共振
量子力学
作者
Mukta Singh,Labanya Ghosh,Vinod K. Gangwar,Yogendra Kumar,Devendra Pal,Prashant Shahi,Shiv Kumar,Sudip Mukherjee,Kenya Shimada,Sandip Chatterjee
摘要
The magneto-transport and angle-resolved photoelectron spectroscopy (ARPES) of the S-doped Bi1.5Sb0.5Te1.3Se1.7 system have been investigated. Both the positive magnetoresistance (pMR) and negative magnetoresistance (nMR) under a perpendicular magnetic field as well as a changeover from weak antilocalization (WAL) to weak localization (WL) are observed. The interplay between pMR and nMR is elucidated in terms of the dephasing and spin–orbit scattering time scales. The topological surface state bands have been explored using ARPES.
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