题目：Majorana Fermions in Topological superconductors

报告人：周涛 教授 南京航空航天大学

时间：5月22日（周五）下午3：00

地点：物理楼313学术报告厅

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报告人简介：周涛，目前为南京航空航天大学教授，周涛教授2001年和2006年在南京大学物理系分别获得学士和博士学位，之后先后在香港和美国休斯顿大学从事博士后研究工作， 2010年到南京航空航天大学工作，目前主要从事超导体物理性质的理论研究，在Physical Review Letters， Physical Review B, Scientific Reports等权威期刊上发表论文20余篇。 回国后，先后获得两项国家自然科学基金资助，并于2012年获得江苏省青蓝工程优秀青年骨干教师和教育部新世纪优秀人才支持计划资助。

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报告摘要：

The Majorana fermion (MF), a particle that is its ownantiparticle, was originally proposed by Majorana many years ago. For the past decade, the MFs have attracted tremendous attention due to their exotic properties. Especially manipulating MFs is one promising way to realize the non-Abelian statistics that may have potential applications in topological quantum computation. For condensed matter systems, the MFs were first predicted to emerge in the Pfaffian fractional quantum Hall state. Later, it was proposed that the MFs exist in the topological superconducting system associated with the zeroenergy bound states in the vortex core.

We here explore Majorana fermion states in an s-wavesuperconductor in the presence of spin-orbital coupling and an additional potential. Two locally separated Majorana fermion states are revealed numerically based on the self-consistent Bogoliubov-deGennes equations. The local density of states is calculated, through which the signatures of Majorana excitations may be indicatedexperimentally.