Ordered states in the Kitaev-Heisenberg model: From 1D chains to 2D honeycomb
Sign Up to like & getrecommendations! Published in 2018 at "Scientific Reports"
DOI: 10.1038/s41598-018-19960-4
Abstract: We study the ground state of the 1D Kitaev-Heisenberg (KH) model using the density-matrix renormalization group and Lanczos exact diagonalization methods. We obtain a rich ground-state phase diagram as a function of the ratio between… read more here.
Keywords: kitaev heisenberg; states kitaev; heisenberg model; model ... See more keywords
Spin-1 Kitaev-Heisenberg model on a honeycomb lattice
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.121102
Abstract: We study the Kitaev-Heisenberg model with spin-1 local degree of freedom on a two-dimensional honeycomb lattice numerically by density matrix renormalization group method. By tuning the relative value of the Kitaev and Heisenberg exchange couplings,… read more here.
Keywords: heisenberg model; spin; honeycomb lattice; kitaev heisenberg ... See more keywords
Quantum phase transitions in the spin-1 Kitaev-Heisenberg chain
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.144437
Abstract: Recently, it has been proposed that higher-spin analogues 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… read more here.
Keywords: quantum phase; kitaev heisenberg; spin; phase transitions ... See more keywords
Phases and quantum phase transitions in the anisotropic antiferromagnetic Kitaev-Heisenberg- Γ magnet
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review B"
DOI: 10.1103/physrevb.104.195115
Abstract: We study the Kitaev-Heisenberg-Γ model with antiferromagnetic Kitaev exchanges in the strong anisotropic (toric code) limit to understand the phases and the intervening phase transitions between the gapped Z2 quantum spin liquid and the spin-ordered… read more here.
Keywords: phase; phase transitions; antiferromagnetic kitaev; kitaev heisenberg ... See more keywords
Topological superconductivity in the extended Kitaev-Heisenberg model
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DOI: 10.1103/physrevb.97.014504
Abstract: We study superconducting pairing in the doped Kitaev-Heisenberg model by taking into account the recently proposed symmetric off-diagonal exchange Γ. By performing a mean-field analysis, we classif ... read more here.
Keywords: kitaev heisenberg; heisenberg model; topological superconductivity;
Dynamics of the Kitaev-Heisenberg Model.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.157203
Abstract: We introduce a matrix-product state based method to efficiently obtain dynamical response functions for two-dimensional microscopic Hamiltonians. We apply this method to different phases of the Kitaev-Heisenberg model and identify characteristic dynamical features. In the… read more here.
Keywords: kitaev heisenberg; heisenberg model; model; dynamics kitaev ... See more keywords
Phase Diagram of the Kitaev–Heisenberg Model Using Various Finite-Size Clusters
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the Physical Society of Japan"
DOI: 10.7566/jpsj.92.055001
Abstract: We estimate phase boundaries of four ordered and two spin-liquid phases for the spin-$\frac{1}{2}$ Kitaev-Heisenberg (KH) model using four kinds of relatively-small clusters, based on the second derivative of ground-state energy. The estimated values are… read more here.
Keywords: heisenberg model; size clusters; kitaev heisenberg; model using ... See more keywords