题目：Questing after Majorana Particles in Topological Matter

报告人：胡晓

                 筑波大学教授

时间：2015年10月29日（周四）16:00

地点：国家脉冲强磁场科学中心B206

报告摘要：

A Majorana particle is a fermion and equivalent to its antiparticle, which was proposed by E. Majorana in 1937 in order to explain the neutrino. While not yet confirmed as an elementary particle for about 80 years, physicists are excited recently by its presence in matters, since quasiparticle excitations in topological superconductors behave in the way with “particle being equivalent to antiparticle”, known as the Majorana condition. These Majorana quasiparticles (MQPs) are considered to be useful for realizing decoherence-free quantum computation. In this talk, I will introduce our recent work on search of MQPs in a topological superconductor formed by a topological insulator and a conventional s-wave superconductor. We reveal that, in the spin-resolved spatial-energy distribution of local density of states, there is a checkerboard-like pattern associated with MQP due to the intimate relation among the orbital and spin angular momenta and the phase winding of superconducting vortex. This, if measured successfully by the spin-resolved STM/STS, provides evidence for the long-searched-for Majorana particle.

报告人简介：

胡晓教授是东京大学理学博士，世界顶级计划材料纳米结构学研究中心（WPI-MANA）PI，日本国立物质材料研究机构(NIMS)研究主管，筑波大学教授。

胡晓教授从事理论物理研究，曾先后在日本东京大学、东北大学、美国国家标准技术研究所(NIST)等研究机构从事教学科研工作。1996年加盟日本国立物质材料研究机构，担任研究主管。他在铜氧化物高温超导Abrikosov磁通格子的融化相变，本征约瑟夫森结THz电磁波辐射，新奇拓扑态及物质设计等研究领域取得了一系列重要成果。至今已在Superconductor Science and Technology，Advanced Materials，Advances in Physics等重要期刊发表综述文章。

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