题目：Recent progress of first-principles calculations on advanced magnetic materials interface

报告人：张佳 副教授

                 华中科技大学物理学院

时间：2017年11月9日下午14:30

地点：国家脉冲强磁场科学中心C204

报告摘要：

Spintronics is an emergent developing research field in condensed matter physics in which the electron charge, spin interact with each other. Especially various interesting phenomenon will arise with different functional magnetic materials interface and lead to potential device applications.

In this talk I will discuss our recent first-principles calculations results on some advanced magnetic interfaces aiming at the low power consumption spintronics applications including:

(1) the voltage controlled magnetic anisotropy in Fe/MgO interface^[1];

(2) Magnetic Phase Transition-Tunnel Magneto-Resistance (MPT-TMR)- A new type of tunnel magneto-resistance effect^[2-3];

(3) And if have time I will also briefly discuss the interface electronic properties between a topologic insulator Bi₂Se₃ and 3d magnetic transition metals^[4].

参考文献：

[1] Model of orbital populations for voltage-controlled magnetic anisotropy in transition-metal thin films,Jia Zhang, P. V. Lukashev, S. S.J aswal, and E. Y. Tsymbal,Phy. Rev. B96, 014435(2017).

[2] Tunneling anisotropic magnetoresistance driven by magnetic phase transition, X. Z. Chen, J. F. Feng, Z. C. Wang, J. Zhang, X. Y. Zhong, C. Song, L. Lin, B. Zhang, F. LI, M. Jiang, Y. Z. Tan, X. J. Zhou, G. Y. Shi, X. F. Zhou, X. D. Han, S. C. Mao, Y. H. Chen, X. F. Han, and F. Pan,Nat. Commun.,8, 447 (2017).

[3] Giant tunnel magnetoresistance with a single magnetic phase-transition electrode,Jia Zhang,X. Z. Chen,C. Song,J. F. Feng,H. X. Wei,Jing-Tao Lü,arXiv:1709.00687.

[4] Band structure and spin texture of Bi₂Se₃ 3d ferromagnetic metal interface, Jia Zhang, Julian P. Velev, Xiaoqian Dang, and Evgeny Y. Tsymbal,Phys. Rev. B94, 014435 (2016).

报告人简介：

张佳，2007年获兰州大学理论物理学士学位，2012年获中科院物理研究所凝聚态物理博士学位，随后分别在德国吉森大学（Prof. C.Heiliger课题组）、美国内布拉斯加大学林肯分校（Prof. E.Y.Tsymbal课题组）从事磁性纳米结构特别是磁性隧道结的电、声子输运性质、拓扑绝缘体/磁性材料界面电子结构、电压控制的各向异性等方面的第一性原理计算研究。2016年12月起，就职于华中科技大学物理学院，主要研究自旋电子学材料、物理与器件的第一性原理计算及理论设计，已在Phys. Rev. Lett., Nat. Commun., Phys. Rev. B等国际学术期刊发表论文20余篇，担任Nat. Commun., Phys. Rev. B, Scientific Report, Phys. Lett. A等国际知名期刊审稿人。

热忱欢迎广大老师，同学来聆听张佳老师的讲座！