Electric-field control of surface magnetic anisotropy: a density functional approach
Electric-field control of surface magnetic anisotropy: a density functional approach
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DOI：
10.1088/1367-2630/11/4/043007
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发表时间：
2009-04
影响因子：
3.3
通讯作者：
Hongbin Zhang;M. Richter;K. Koepernik;I. Opahle;F. Tasnádi;H. Eschrig
中科院分区：
文献类型：
--
作者：
Hongbin Zhang;M. Richter;K. Koepernik;I. Opahle;F. Tasnádi;H. Eschrig
在最近的实验中，Weisheit等人（2007 Science 315 349）证明了薄L10 FePt和FePd膜的导电性可以通过电化学环境中的外部电场来改变。在这里，这一观察证实了密度泛函计算的内禀磁各向异性。通过一种通用而简单的方法来模拟带电金属表面，阐明了这种效应的起源。据预测，薄的CoPt膜的电阻率是更容易受到电场比FePt膜。
In a recent experiment, Weisheit et al (2007 Science 315 349) demonstrated that the coercivity of thin L10 FePt and FePd films can be modified by the external electric field in an electrochemical environment. Here, this observation is confirmed by density functional calculations for the intrinsic magnetic anisotropy. The origin of the effect is clarified by means of a general and simple method to simulate charged metal surfaces. It is predicted that the coercivity of thin CoPt films is much more susceptible to electric field than that of FePt films.