界面电子结构调控及其对磁性影响的研究

本项目通过调节界面电子结构，力图实现自旋电子器件中关键的铁磁/氧化物异质结材料磁性的高效、非易失性以及可逆性调控。建立相关物理模型，深入理解界面电子结构影响磁性的机理。拟解决的关键科学问题是：（1）如何利用电场实现铁磁/氧化物界面电子结构的调制，使磁性获得非易失性和可逆性的调控？（2）如何利用TiNi记忆合金的大弹性应变调节铁磁/氧化物异质结的电子结构来实现磁性的大幅度调控？（3）如何利用不同元素的插层调控铁磁/氧化物界面的电子结构和磁性，研究界面电子结构影响磁性的规律？

This project aims at the efficient, non-volatile, and reversible manipulation of the magnetic properties in ferromagnet/oxide heterostructures which are key materials in spintronic devices by controlling the interfacial electronic structures. Relevant physics models are built to get a deep understand in the manipulation mechanisms of the interfacial electronic structures for magnetic properties. The key scientific issues that need to be solved include: (1) How to modulate the electronic structures of the ferromagnet/oxide interface by using electric field to realize non-volatile and reversible control of magnetic properties? (2) How to modify the electronic structures of ferromagnet/oxide heterostructures by using elastic strain of TiNi memory alloy to obtain large manipulation of the magnetic properties? (3) How to tune the interfacial electronic structures and magnetic properties of ferromagnet/oxide heterostructures by using different insertion layers? What is the relationship between the interfacial electronic structures and the magnetic properties?