Gebele, O. and Boehm, M. and Krey, Uwe and Krompiewski, Stefan (2000) Systematic two-band model calculations of the GMR effect with metallic and non-metallic spacers and with impurities. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 214 (3). pp. 309-326. ISSN 0304-8853
Full text not available from this repository. (Request a copy)Abstract
By a semi-empirical Green's function method we calculate resistances and the corresponding giant magneto-resistance effects (GMR) of two metallic ferromagnetic films separated by different spacers, metallic and non-metallic ones, in a simplified model on an SC lattice, in CPP and CIP geometries (i.e. current perpendicular or parallel to the planes), without impurities, or with interface- or bulk impurities. The electronic structure of the systems is approximated by two hybridized orbitals per atom, to mimic s-bands and d-bands and their hybridization. We show that such calculations usually give rough estimates only, but of the correct order of magnitude; in particular, the predictions on the impurity effects depend strongly on the model parameters. One of our main results is the prediction of huge CPP-GMR effects for non-metallic spacers in the ballistic limit. (C) 2000 Elsevier Science B.V. All rights reserved.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ANTIFERROMAGNETIC INTERLAYER EXCHANGE; PERPENDICULAR GIANT MAGNETORESISTANCE; AB-INITIO CALCULATIONS; MAGNETIC MULTILAYERS; FE/CR MULTILAYERS; LAYER; SUPERLATTICES; CONDUCTANCE; ALLOYS; NI; giant magnetoresistance; non-metallic spacers; impurities; two-band model |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 26 Apr 2022 14:42 |
| Last Modified: | 26 Apr 2022 14:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42446 |
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