Ferromagnetism in Cr-based diluted magnetic semiconductors

被引:34
作者
Blinowski, J
Kacman, P
Majewski, JA
机构
[1] POLISH ACAD SCI,INST PHYS,PL-02668 WARSAW,POLAND
[2] UNIV WARSAW,INST THEORET PHYS,PL-00681 WARSAW,POLAND
[3] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY
关键词
D O I
10.1016/0022-0248(95)00719-9
中图分类号
O7 [晶体学];
学科分类号
0702 ; 070205 ; 0703 ; 080501 ;
摘要
The antiferromagnetic ion-ion interactions observed in A(II)B(VI) diluted magnetic semiconductors (DMS) impose an upper limit to the increase of the giant free carrier spin-splitting with the growing content of the magnetic ions. In this paper we report the first calculations of the superexchange in Cr-based DMS and we predict the ion-ion interactions to be ferromagnetic in these materials. Within the same model we clarify the origins of the recently discovered ferromagnetic p-d interactions in zinc chalcogenides with Cr2+ paramagnetic ions.
引用
收藏
页码:972 / 975
页数:4
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