Theoretical Studies of New Functionalities of Low-dimensional Magnetic and Topological Materials

Speaker: 
Ruqian Wu
Institution: 
UC Irvine
Date: 
Thursday, October 6, 2022
Time: 
3:30 pm
Location: 
ISEB 1200
Abstract: 
The control of the spin degree of freedom in low-dimensional heterostructures with different approaches such as strain, electric bias, stacking, or twisting is crucial for the design of the new spintronic materials and devices. Using the density functional theory and model simulations, properties of complex materials can be reliably predicted and explained, and mostly new science can be established. I will discuss examples of our recent theoretical studies of low-dimensional magnetic and topological materials. Explicitly, the talk will touch several topics such as the control of quantum spin states of small systems such as single magnetic molecules or atoms with electric polarization, the  effect of spin-vibration coupling on the decoherence of these quantum states,  the magnetization of the surface states of topological insulators, the production and quantum anomalous Hall effect and axion state, and the remote control of the spin polarization of corner states of high order topological insulators. Some examples that show the close collaborations with experimental groups will also be discussed.
 
Host: 
Kevork Abazanian