TRIPLE-Q VORTEX-LATTICE MAGNETIC-STRUCTURES OF ITINERANT-FERMION SYSTEMS ON A TRIANGULAR LATTICE

被引：27

作者：

FUJITA, M ^{[1
]}

NAKANISHI, T ^{[1
]}

MACHIDA, K ^{[1
]}

机构：

[1] OKAYAMA UNIV,DEPT PHYS,OKAYAMA 700,JAPAN

来源：

PHYSICAL REVIEW B | 1992年 / 45卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.45.2190

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a general discussion of the vortex-lattice state on a triangular lattice. The vortex-lattice state is characterized as the noncollinear triple-Q spin-density-wave state with higher harmonics and stabilized near half filling in the itinerant-fermion system. Various types of the vortex-lattice states are presented by utilizing the Hubbard model within a mean-field approximation, and we show how the excess particles or holes are properly accommodated in a midgap state created inside the main gap of the energy spectrum.

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页码：2190 / 2195

页数：6

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