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Skyrmion Topo-tronics
Date: 2016/12/30             Browse: 586
Seminar Topic: Skyrmion Topo-tronics

Speaker: Wanjun Jiang
Time: Dec. 30, 10:15 a.m. - 11:15 a.m.
Venue:  Room 1A-200, SIST Building

Symmetry breaking together with the strong spin-orbit interaction give rise to many exciting opportunities to the condensed matter physics community. Topologically protected magnetic skyrmions are one of the representative examples. In this talk, I will first present our recent progress in electric creation and manipulation of magnetic skyrmion at room temperature in heterostructures with an interfacial broken inversion symmetry. This observation is triggered by the inhomogeneous current induced spin-orbit torque in a Ta/CoFeB/TaOx trilayer. Secondly, I will demonstrate experimentally a topology driven dynamics of magnetic skyrmion – the skyrmion Hall effect – that is the accumulation of skyrmions at one side of the device. Thirdly, strategy towards sub-50 nanometer skyrmions at room temperature in the absence of magnetic field will be discussed. In the end, some open questions and future focus points will be addressed.

江万军,清华大学物理系助理教授。2005年从兰州大学物理学院获得微电子学士学位。于2010在加拿大曼尼托巴大学物理系取得凝聚态物理学博士学位。之后在加州大学洛杉矶分校电子工程系以及美国阿贡国家实验室从事博士后研究。研究兴趣包括自旋相关成像,自旋动力学,以及拓扑自旋轨道电子学。以第一作者发表论著包括Science (1篇), Nature Physics (1篇), PRL (2篇), PRB (10篇)。共发表论文50余篇,引用1600余次。长期担任Rev.Mod.Phys., Nature Nano., PRL等期刊的审稿人。他获得过加拿大总督科学金奖,加州大学洛杉矶分校校长奖,于2016年入选中组部青年千人计划。

Seminar 16093