Magnetic Properties and Stability of Quasi-One-Dimensional Cr Chains Embedded in (Zn,Cr)Te
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概要
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The controlled formation of quasi-one-dimensional (1D) chainlike structures of transition metal impurities in diluted magnetic semiconductors has been proposed to increase their Curie temperatures. We investigate the stability and magnetism of several quasi-1D Cr chains embedded in the prototype system (Zn,Cr)Te by first-principles calculations. We find that the quasi-1D Cr chains indeed are stable, and the binding energy driving this phase separation is enhanced as the wires become thicker. However, the ferromagnetic stabilization energy weakens as the quasi-1D Cr chains become thicker, which will decrease Curie temperatures.
- 2013-07-25
著者
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Fujita Takeshi
Department Of Applied Physics Osaka City University
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Nakayama Hikaru
Department of Physics, Yokohama National University, Yokohama 240-8501, Japan
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Raebiger Hannes
Department of Physics, Yokohama National University, Yokohama 240-8501, Japan
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