报告题目：Current Development in the Experimental Search for Majorana Fermions in Solid State

报 告 人：徐洪起，Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics, Peking University

报告时间：2015年1月15日16:00

报告地点：物理系三楼报告厅

报告摘要：The search for Majorana fermions in solid state systems is one of paramount research tasks in modern physics today. Majorana fermions are an elusive class of fermions that are their own antiparticles. Although an extensive effort has been made worldwide in particle physics, Majorana fermions have so far not been convincingly discovered in free space. In recent years, numerous theoretical proposals for probing Majorana fermion states in solid state systems have been suggested, ranging from exploring ν = 5/2 fractional quantum Hall systems, to exploring chiral p-wave superconductor systems, and to exploring hybrid systems of topological insulator thin films in contact to s-wave superconductors. The most recent proposals are to explore the topological superconducting phase of a strong spin−orbit coupled semiconductor nanowire in the proximity of an s-wave superconductor. These proposals have stimulated waves of search for Majorana fermions in solid state. In this colloquium talk, the current achievements in the experimental search for Majorana fermions in solid state systems will be reviewed. A view of future experimental directions in the pursuit of Majorana fermions in solid state systems will also be presented and discussed.