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- W2959623618 endingPage "504003" @default.
- W2959623618 startingPage "504003" @default.
- W2959623618 abstract "The nature of the randomness-induced quantum spin liquid state, the random-singlet state, is investigated in two dimensions (2D) by means of the exact-diagonalization and the Hams-de Raedt methods for several frustrated lattices, e.g. the triangular, the kagome and the J1-J2 square lattices. Properties of the ground state, the low-energy excitations and the finite-temperature thermodynamic quantities are investigated. The ground state and the low-lying excited states consist of nearly isolated singlet-dimers, clusters of resonating singlet-dimers, and orphan spins. Low-energy excitations are either singlet-to-triplet excitations, diffusion of orphan spins accompanied by the recombination of nearby singlet-dimers, creation or destruction of resonating singlet-dimers clusters. The latter two excitations give enhanced dynamical 'liquid-like' features to the 2D random-singlet state. Comparison is made with the random-singlet state in a 1D chain without frustration, the similarity and the difference between in 1D and in 2D being highlighted. Frustration in a wide sense, not only the geometrical one but also including the one arising from the competition between distinct types of interactions, play an essential role in stabilizing this frustrated random singlet state. Recent experimental situations on both organic and inorganic materials are reviewed and discussed." @default.
- W2959623618 created "2019-07-23" @default.
- W2959623618 creator A5016184471 @default.
- W2959623618 creator A5070602982 @default.
- W2959623618 date "2019-09-23" @default.
- W2959623618 modified "2023-09-24" @default.
- W2959623618 title "Nature of the randomness-induced quantum spin liquids in two dimensions" @default.
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