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arXiv · 1101.4476

Origin of Magnetism and trend in $T_{c}$ in Cr-based double perovskites: Interplay of two driving mechanisms

Hena Das·Prabuddha Sanyal·T. Saha-Dasgupta·D. D. Sarma
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Abstract

Employing first principles density functional calculations, together with solution of the low-energy, model Hamiltonian constructed in a first principles manner, we explored the origin of magnetism and $T_c$ trend in Cr-based double perovskite series, Sr$_2$CrB$'$O$_6$ (B$'$=W/Re/Os). Our study shows that the apparently puzzling $T_c$ trend in Sr$_2$CrB$'$O$_6$ (B$'$=W/Re/Os) series can be understood in terms of the interplay of the hybridization driven mechanism and the super-exchange mechanism.

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Hena Das, Prabuddha Sanyal, T. Saha-Dasgupta, D. D. Sarma. 2011-01-24. Origin of Magnetism and trend in $T_{c}$ in Cr-based double perovskites: Interplay of two driving mechanisms. https://doi.org/10.1103/physrevb.83.104418

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