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Electronic Structure and Bulk Spin Valve Behavior in Ca$_3$Ru$_2$O$_7$

D. J. Singh·S. Auluck
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Abstract

We report density functional calculations of the magnetic properties and Fermiology of Ca$_3$Ru$_2$O$_7$. The ground state consists of ferromagnetic bilayers, stacked antiferromagnetically. The bilayers are almost but not exactly half-metallic. In the ferromagnetic state opposite spin polarizations are found for in-plane and out-of-plane transport. Relatively high out of plane conductivity is found for the majority spin, which is relatively weakly conductive in-plane. In the ground state in-plane quantities are essentially the same, but the out of plane transport is strongly reduced.

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D. J. Singh, S. Auluck. 2005-12-27. Electronic Structure and Bulk Spin Valve Behavior in Ca$_3$Ru$_2$O$_7$. https://doi.org/10.1103/physrevlett.96.097203

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