期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 26, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.266405
关键词
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资金
- NNSA of the U.S. DOE at LANL [DE-AC52-06NA25396]
- LANL/LDRD Program
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 S-j, we find a thermodynamic phase transition into an exotic spin ordering with uniform scalar spin chirality and < S-j > = 0. The state exhibits a spontaneous quantum Hall effect. We also study how its properties are affected by the application of an external magnetic field.
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