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arXiv · 1009.3059

Stability of spontaneous quantum Hall state in the Triangular Kondo-lattice model

Yasuyuki Kato·Ivar Martin·C. D. Batista
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Abstract

We study the behavior of the quarter-filled Kondo lattice model on a triangular lattice by combining a zero-temperature variational approach and finite-temperature Monte-Carlo simulations. For intermediate coupling between itinerant electrons and classical moments ${\bf S}_j$, we find a thermodynamic phase transition into an exotic spin ordering with uniform scalar spin chirality and $< {\bf S}_j >=0$. The state exhibits spontaneous quantum Hall effect. We also study how its properties are affected by application of an external magnetic field.

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Yasuyuki Kato, Ivar Martin, C. D. Batista. 2010-09-15. Stability of spontaneous quantum Hall state in the Triangular Kondo-lattice model. https://doi.org/10.1103/physrevlett.105.266405

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