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- W1637419734 abstract "We study the ground state of three-leg $S=1/2$ Heisenberg tube using the density-matrix renormalization group method. The dimerization order-parameter and spin-excitation gap are calculated in a wide range of leg exchange interactions. We confirm that a gapped state with the dimerization order is realized even when the leg exchange interactions are ferromagnetic. Furthermore, the topological configuration of spin-singlet pairs in the ordered state is determined from the results of the Berry phase of each spin coupling as well as the structure factor of singlet-singlet correlation functions. We find that there exist three kinds of configurations of the valence-bond states depending on the ratio of leg and rung exchange interactions." @default.
- W1637419734 created "2016-06-24" @default.
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- W1637419734 date "2010-01-30" @default.
- W1637419734 modified "2023-09-27" @default.
- W1637419734 title "Gapped state in three-leg $S=1/2$ Heisenberg tube" @default.
- W1637419734 hasPublicationYear "2010" @default.
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