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Appearance of inverse giant magnetoresistance in noncollinear magnetic systems |
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| Authors: | S. Di Napoli J. Milano A. M. LLois H. Dreyss |
| Affiliation: | a Departamento de Física, UBA Pab. 1, Ciudad Universitaria, 1429 Buenos Aires, Argentina b Lab. TANDAR, CAC, CNEA. Av. Gral. Paz 1499, 1650 Partido de Gral, San Martín, Argentina c Inst. de Phys. et Chimie des Matériaux de Strasbourg, Université L. Pasteur, F. 67037 Strasbourg, France |
| Abstract: | We show for a simple d-band TB Hamiltonian that noncollinear magnetic configurations can contribute to large inverse giant magnetoresistance (IGMR) ratios. We make a systematic study as a function of band filling, magnetic moment and canting angle for some simple model examples and use the outcome of this study to interpret the experimentally observed IGMR ratios on LaMn2Ge2. |
| Keywords: | Magnetoresistance Transport properties Magnetic structure – noncollinear |
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