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Yuan-Ming Lu, The Ohio State University, Tunable Surface States of Topological Materials

Date: Mon. March 19th, 2018, 12:45 pm-1:45 pm
Location: Rockefeller 221 (Les Foldy Room)

Tunable Surface States of Topological Materials

Yuan-Ming Lu, The Ohio State University


The discovery of topological insulators revealed a large class of topological materials, which exhibit novel surface states with unusual properties. I will discuss some recent progress in engineering surface states of topological materials, focusing on two different systems. The 1st class of materials is three-dimensional Dirac semimetals including Na3Bi and Cd3As2, whose topological surface states can be deformed in these materials by either doping or applying mechanical strain. The 2nd class of materials are spin-orbit coupled quantum magnets, which can host topological magnon surface states robust again disorders. I’ll discuss the zigzag magnetic order in layered \alpha-RuCl3 as one example, where chiral magnon surface states can be achieved by applying magnetic field.


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