报告题目：Exploring Proximity Coupling for Novel Spin-Dependent Phenomena

报 告 人：Shi Jing, Department of Physics & Astronomy, University of California, Riverside

报告时间：2018-06-14 10:00

报告地点：理科楼C109会议室

报告摘要：In heterostructures made of two dissimilar materials, proximity coupling at the interface can have profound consequences on the physical properties of both. Numerous examples exist in condensed matter physics. I will present our recent work on proximity effects to induce spin-orbit coupling (SOC) and exchange interaction. In graphene/transition metal dichalcogenide (TMD) heterostructures, we have successfully induced up to 1.5 meV in Rashba SOC (two-three orders of magnitude greater than the intrinsic SOC strength) in graphene measured by quantum transport. To induce exchange interaction, we have exploited atomically flat rare-earth iron garnet films (e.g. yttrium iron garnet- YIG and thulium iron garnet- TIG) as the source of the exchange and demonstrated strong exchange interaction in graphene and the surface states of (Bi, Sb)₂Te₃topological insulator. These two interactions are essential ingredients for realizing the quantum anomalous Hall state in both systems, which is very exciting for potential spintronic applications.