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``Flux'' state in double exchange model

Masanori Yamanaka·Wataru Koshibae·Sadamichi Maekawa
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Abstract

We study the ground state properties of the double-exchange systems. The phase factor of the hopping matrix elements arises from $t_{2g}$ spin texture in two or more dimensions. A novel ``flux'' state is stabilized against the canted antiferromagnetic and spiral spin states. In a certain range of hole doping, the phase separation occurs between the ``flux'' state and antiferromagnetic states. Constructing a trial state which provides the rigorous upper bound on the ground state, we show that the metallic canted antiferromagnetic state is not stable in the double exchange model.

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Masanori Yamanaka, Wataru Koshibae, Sadamichi Maekawa. 1998-07-12. ``Flux'' state in double exchange model. https://doi.org/10.1103/physrevlett.81.5604

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