Exotic Finite-Temperature Phase Diagram for Weakly Coupled S = 1/2 XXZ Chain in a Magnetic Field(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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We investigate the ordered state in S = 1/2 XXZ spin chains with weak interchain couplings in a magnetic field by using quantum Monte Carlo simulations based on the directed-loop algorithm. The H-T phase diagram is illustrated for a square lattice and we find that an exotic spin-liquid state with quasi long-range incommensurate correlations in both the spin-chain and interchain directions may appear in the low-magnetization region without a finite-temperature transition. We also show that the incommensurate long-range-ordered state is stable for a cubic lattice.
- 社団法人日本物理学会の論文
- 2007-12-15
著者
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KAWASHIMA Naoki
Institute for Solid State Physics, University of Tokyo
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Kawashima Naoki
Institute For Solid State Physics University Of Tokyo
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SUZUKI Takafumi
Institute for Solid State Physics, University of Tokyo
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OKUNISHI Kohichi
Department of Physics, Niigata University
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Okunishi Kohichi
Department Of Physics Niigata University
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Suzuki Takafumi
Institute For Solid State Physics University Of Tokyo
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