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Effect of disorder on the electronic structure of the double perovskite Sr2FeMoO6 |
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| Authors: | R Allub O Navarro M Avignon and B Alascio |
| Institution: | a Instituto Balseiro, Centro Atómico Bariloche, 8400, San Carlos de Bariloche, Argentina b Instituto de Investigaciones en Materiales, UNAM, Apartado Postal 70-360, 04510, México, DF, Mexico c Laboratoire d'Etudes des Propriétés Electroniques des Solides, Associated with Université Joseph Fourier, C.N.R.S., BP 166, 38042, Grenoble Cedex 9, France |
| Abstract: | Recently, Sr2FeMoO6 has been established as a new colossal magnetoresistance material with substantial low-field magnetoresistance at room temperature and has attracted much attention in the double perovskite family. This material always appears with a certain degree of miss-site disorder where Fe and Mo interchange their positions. Using renormalized perturbation expansion, we calculate the density of states and determine the variation of the critical temperature in the low disorder regime. |
| Keywords: | Sr2FeMoO6 Double perovskites |
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