Quantum phase transitions in the spin-1 Kitaev-Heisenberg chain

Recently, it has been proposed that higher-spin analogs of the Kitaev interactions K > 0 may also occur in a number of materials with strong Hund's and spin-orbit coupling. In this work, we use Lanczos diagonalization and density matrix renormalization group methods to investigate numericall...

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Bibliographic Details
Published in:Physical review. B 2020-10, Vol.102 (14), Article 144437
Main Authors: You, Wen-Long, Sun, Gaoyong, Ren, Jie, Yu, Wing Chi, Oleś, Andrzej M.
Format: Article
Language:English
Subjects:
Ferromagnetic phases
Ferromagnetism
Heisenberg theory
Numerical methods
Phase diagrams
Phase transitions
Renormalization group methods
Spin liquid
Spin-orbit interactions
Statistical models
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Summary:Recently, it has been proposed that higher-spin analogs of the Kitaev interactions K > 0 may also occur in a number of materials with strong Hund's and spin-orbit coupling. In this work, we use Lanczos diagonalization and density matrix renormalization group methods to investigate numerically the S = 1 Kitaev-Heisenberg model. The ground-state phase diagram and quantum phase transitions are investigated by employing local and nonlocal spin correlations. We identify two ordered phases at negative Heisenberg coupling J < 0 : a ferromagnetic phase with ... and an intermediate left-left-right-right phase with ⟨ ... A quantum spin liquid is stable near the Kitaev limit, while a topological Haldane phase is found for J > 0 .(ProQuest: ... denotes formulae omitted.)
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.102.144437