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Majorana spintronics: When Majorana meets spin

来源:
报告题目   Majorana spintronics: When Majorana meets spin
报告人   Prof. LIU Xin
报告人单位   Huazhong University of Science and Technology
报告时间   2016-12-15
报告地点   合肥微尺度物质科学国家实验室九楼会议室(9004)
主办单位   合肥微尺度物质科学国家实验室、国际功能材料量子设计中心(ICQD)
报告介绍
Abstract:
Spin is the fundamental electronic quantum degrees of freedom in solid state materials. In superconductors, Cooper pairs, as composed of two spin-1/2 particles, can have spin-1 angular momentum, leading to spin-triplet pairings. In this talk, we show that Majorana zero modes in solids has universal pure spin-triplet correlations for both time-reversal broken and respect topological superconductors (TSCs). These Majorana-induced spin-triplet correlations carry an intrinsic spin-phase which can be manipulated by gate tunable spin-orbit coupling and leads to spin-related fractional Josephson effect. Based on this, we further propose a systematic magnetic flux free approach to detect, manipulate and braid Majorana fermions by utilizing Majorana spin degree of freedom. Some new exotic phenomena due to spin-phase for time-reversal invariant topological superconductors will be discussed at the end.
 
Biosketch:
  Prof. Xin Liu got his B.S. degree in Nankai University and M.S. degree in Chern Institute of Mathematics, Tianjin. He received his Ph. D. from Texas A&M University in 2012. After graduation, he had worked as a postdoctoral researcher in the Pennsylvania State University from 2012 to 2014 and Condensed Matter Theory Center, University of Maryland from 2014-2015. He joined Huazhong University of Science and Technology in June 2015.

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