Manipulating effective spin orbit coupling based on proximity effect in magnetic bilayers

作者：Zhang, Y. Q.; Sun, N. Y.; Che, W. R.; Li, X. L.; Zhang, J. W.; Shan, R.^*; Zhu, Z. G.; Su, G.

来源：Applied Physics Letters, 2015, 107(8): 082404.

DOI：10.1063/1.4929585

• TOPOLOGICAL INSULATORS
• WEAK FERROMAGNETISM
• MAGNETORESISTANCE
• SKYRMION

A proximity effect of spin orbit coupling (SOC) is proposed in nonmagnetic metal/ferromagnet (NM/FM) bilayers by extending the Crepieux-Bruno (CB) theory. We demonstrate that over 1000% enhancement of the SOC strength can be realized based on this effect (Pt/FM bilayers) and it brings greatly enhanced anomalous Hall effect and anomalous Nernst effect. This work could help maximize the performance of magnetic transport property for the spintronics device using NM/FM as the key structure.

• 出版日期2015-8-24
• 单位中国科学院大学; 同济大学