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Diluted ferromagnetic semiconductor Li(Zn,Mn)P with decoupled charge and spin doping

分離されたスピン・電荷をもつ希釈強磁性半導体Li(Zn,Mn)P

Deng, Z.*; Zhao, K.*; Gu, B.; Han, W.*; Zhu, J. L.*; Wang, X. C.*; Li, X.*; Liu, Q. Q.*; Yu, R. C.*; 後神 達郎*; Frandsen, B.*; Liu, L.*; Zhang, J.*; Wang, Y.*; Ning, F. L.*; 前川 禎通; 植村 泰朋*; Jin, C. Q.*

Deng, Z.*; Zhao, K.*; Gu, B.; Han, W.*; Zhu, J. L.*; Wang, X. C.*; Li, X.*; Liu, Q. Q.*; Yu, R. C.*; Goko, Tatsuo*; Frandsen, B.*; Liu, L.*; Zhang, J.*; Wang, Y.*; Ning, F. L.*; Maekawa, Sadamichi; Uemura, Yasutomo*; Jin, C. Q.*

We report the discovery of a diluted magnetic semiconductor, Li(Zn,Mn)P, in which charge and spin are introduced independently via lithium off-stoichiometry and the isovalent substitution of Mn$$^{2+}$$ for Zn$$^{2+}$$, respectively. Isostructural to (Ga,Mn)As, Li(Zn,Mn)P was found to be a ${it p}$-type ferromagnetic semiconductor with excess lithium providing charge doping. First-principles calculations indicate that excess Li is favored to partially occupy the Zn site, leading to hole doping. Ferromagnetism with Curie temperature up to 34 K is achieved while the system still shows semiconducting transport behavior.

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パーセンタイル:6.49

分野:Materials Science, Multidisciplinary

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