Spin to Charge Conversion in the Surface States of a Kondo Topological Insulator SmB6

• 作 者: Qi Song Jian Mi Dan Zhao Tang Su Wei Yuan Wenyu Xing Yangyang Chen Tianyu Wang Tao Wu Xian Hui Chen X.C.Xie Chi Zhang Jing Shi Wei Han
• 机 构: International Center for Quantum Materials,School of Physics,Peking University,Beijing 100871,China
• 出 处: 中国物理学会2016年秋季会议
• 发表日期: 2016年5期
• 关键词: Pure spin current spin generation spin-momentum locking topological insulator

　　There has been considerable interest in exploiting the spin degrees of freedom of electrons for potentialinformation storage and computing technologies.Topological insulators(TI),a class of quantum materials,havespecial gapless edge/surface states,where the spin polarization of the Dirac fermions is locked to the momentumdirection.This spin-momentum locking property gives rise to very interesting spin-dependent physicalphenomena such as the Edelstein and inverse Edelstein effects.However,the spin injection and detection in puresurface states of TI is very challenging because of the coexistence of the highly conducting bulk states.