Saha-Dasgupta, T. ; De Raychaudhury, Molly ; Sarma, D. D. (2007) Ferromagnetism in metallic chalcospinels CuCr2S4 and CuCr2Se4 Physical Review B: Condensed Matter and Materials Physics, 76 (5). 054441_1-054441_5. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v76/i5/e054441
Related URL: http://dx.doi.org/10.1103/PhysRevB.76.054441
Abstract
We explore the origin of ferromagnetism in CuCr2S4 and CuCr2Se4by analyzing the computed, ab initio electronic structure. Based on our analysis, we establish the kinetic-energy driven mechanism as operative in the case of double perovskites and pyrochlores to be also responsible in these compounds for the experimentally observed ferromagnetism with high Curie temperatures. We provide detailed microscopic understanding of the mechanism in terms of Nth order muffin-tin orbital based downfolding calculations, estimates of the magnetic exchange coupling, and the ferromagnetic transition temperature, computed in mean-field way.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 46426 |
| Deposited On: | 04 Jul 2011 12:10 |
| Last Modified: | 13 Jul 2012 09:12 |
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