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《Science China(Physics,Mechanics & Astronomy)》 2017年05期
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Majorana zero mode in the vortex of an artificial topological superconductor

Hao-Hua Sun  Jin-Feng Jia  
【摘要】:Majorana fermion(MF),an exotic particle that is identical to its own antiparticle,was recently found in solid matter as a quasiparticle excitation,the Majorana zero mode(MZM),in the vortex of an artificial topological superconductor(TSC).This artificial TSC,first proposed by Fu and Kane in 2008,is a heterostructure made of a topological insulator Bi_2Te_3 and an s-wave superconductor NbSe_2.This paper will briefly review the experimental progresses based on the Bi_2Te_3/NbSe_2 heterostructure.All evidences are self-consistent and reveal that the MZM exists in the center of vortex.Those experimental results are also supported by theory.This finding is a milestone in the research of Majorana fermions in solid state physics and a starting point of MZM's application in topological quantum computation.
【作者单位】Key
【关键词】Majorana fermion Majorana zero mode topological superconductor heterostructure vortex
【分类号】:TM26;O48
【正文快照】:
1 I n t r o d u c t i o n M a j o r a n a f e r m i o n s(M F s)a r e p a r t i c l e s t h a t o b e y t h e M a j or a n a e q u a t i o n p r o p o s e d b y M a j o r a n a i n 1 9 3 7[1].M F s a r e i d e n t i c a l t o t h e i r o w n a n t i p a

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