Camley RE, Li D
Department of Physics, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80933-7150, USA.
Phys Rev Lett. 2000 May 15;84(20):4709-12. doi: 10.1103/PhysRevLett.84.4709.
The temperature dependence of the magnetization in fcc Fe on Cu(100) is calculated using a self-consistent local mean-field theory. The model reproduces an experimental magnetization oscillation as a function of film thickness and supports a picture where the top two layers are ferromagnetically coupled, and the remaining layers are antiferromagnetically coupled. The origin of the puzzling linear temperature dependence in oscillation amplitude is understood as a "surface phenomena" of the antiferromagnetic layer at the Fe/Cu interface. Proximity effects between a thin antiferromagnet with a low Neel temperature and a neighboring ferromagnet with a higher Curie temperature are discussed.
利用自洽局域平均场理论计算了面心立方铁在铜（100）上的磁化强度与温度的关系。该模型再现了作为薄膜厚度函数的实验磁化振荡，并支持一种图像，即顶层的两层是铁磁耦合的，而其余层是反铁磁耦合的。振荡幅度中令人困惑的线性温度依赖性的起源被理解为铁/铜界面处反铁磁层的“表面现象”。讨论了具有低奈尔温度的薄反铁磁体与相邻的具有较高居里温度的铁磁体之间的近邻效应。
