Magnetization of Coupled Ultrathin Ferromagnetic Films |
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Authors: | WANG Huai-Yu ZHOU Yun-song Wang Chong-Yu |
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Institution: | Department of Physics, Tsinghua University, Beijing 100084 China Department of Physics, Capital Normal University, Beijing 100037, China Department of Physics, Tsinghua University, Beijing 100084 China |
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Abstract: | The magnetization of coupled ferromagnetic films is calculated by Green's function method. The coupling can either be ferromagnetic or antiferromagnetic. For the latter case, a concept of pseudo-spin is suggested to make calculation possible. A pseudo-spin is actually an anti-spin with its properties being analogue to other known anti particles such as a hole. The decreasing of Curie point as the coupling strength decays is computed. It is noted that with the same strength, antiferromagnetic coupling has higher Curie point than ferromagnetic coupling. |
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Keywords: | magnetization pseudo-spin coupled ferromagnetic films |
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