FERROMAGNETISM IN CR-BASED DILUTED MAGNETIC SEMICONDUCTORS

被引：11

作者：

BLINOWSKI, J ^{[1
]}

KACMAN, P ^{[1
]}

MAJEWSKI, JA ^{[1
]}

机构：

[1] TECH UNIV MUNICH,WALTER SCHOTTKY INST,D-85748 GARCHING,GERMANY

来源：

ACTA PHYSICA POLONICA A | 1995年 / 88卷 / 04期

关键词：

D O I：

10.12693/APhysPolA.88.683

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

It has been recently established that in zinc chalcogenides with Cr2+ paramagnetic ions the p-d interactions are ferromagnetic. We clarify the origins of this property and make predictions concerning other Cr-based diluted magnetic semiconductors. The observation of the ferromagnetic p-d interaction resuscitated hopes for ferromagnetic d-d exchange interactions in diluted magnetic semiconductors. We have calculated the nearest-neighbor superexchange integrals in Cr-based diluted magnetic semiconductors. No simple correlation between the signs of p-d and d-d interactions has been found. Still, there are extended energy regions where the calculated superexchange is ferromagnetic and the actual parameters of DMS with Cr2+ seem to match these regions.

引用

页码：683 / 686

页数：4

共 14 条

[1]

[Anonymous], 1994, HDB SEMICONDUCTORS

[2] CALCULATION OF HYDROSTATIC AND UNIAXIAL DEFORMATION POTENTIALS WITH A SELF-CONSISTENT TIGHT-BINDING MODEL FOR ZN-CATION-BASED II-VI-COMPOUNDS [J].

BERTHO, D ;

BOIRON, D ;

SIMON, A ;

JOUANIN, C ;

PRIESTER, C .

PHYSICAL REVIEW B, 1991, 44 (12) :6118-6124

[3] KINETIC EXCHANGE IN DILUTED MAGNETIC SEMICONDUCTORS [J].

BLINOWSKI, J ;

KACMAN, P .

PHYSICAL REVIEW B, 1992, 46 (19) :12298-12304

[4]

BLINOWSKI J, 1992, MATER SCI FORUM, V83, P523, DOI 10.4028/www.scientific.net/MSF.83-87.523

[5]

HARRISON WA, 1980, ELECTRONIC STRUCTURE

[6] CHEMICAL TRENDS FOR DEFECT ENERGY-LEVELS IN HG(1-X)CDXTE [J].

KOBAYASHI, A ;

SANKEY, OF ;

DOW, JD .

PHYSICAL REVIEW B, 1982, 25 (10) :6367-6379

[7]

Kossut J., 1993, HDB MAGNETIC MAT, P231

[8] TRANSITION-METAL IMPURITIES IN SEMICONDUCTORS AND HETEROJUNCTION BAND LINEUPS [J].

LANGER, JM ;

DELERUE, C ;

LANNOO, M ;

HEINRICH, H .

PHYSICAL REVIEW B, 1988, 38 (11) :7723-7739

[9] FERROMAGNETIC P-D EXCHANGE IN ZN1-XCRXSE DILUTED MAGNETIC SEMICONDUCTOR [J].

MAC, W ;

KHOI, NT ;

TWARDOWSKI, A ;

GAJ, JA ;

DEMIANIUK, M .

PHYSICAL REVIEW LETTERS, 1993, 71 (14) :2327-2330

[10]

Mac W., 1995, 22nd International Conference on the Physics of Semiconductors, P2573

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