Open AccessMajorana excitations in the anisotropic Kitaev model with an ordered-flux structure
Author(s) -
Akihiro Hashimoto,
Yuta Murakami,
Akihisa Koga
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2164/1/012028
Subject(s) - majorana , physics , anisotropy , gapless playback , lattice (music) , quantum , hamiltonian (control theory) , condensed matter physics , toric code , quantum spin liquid , spin model , quantum mechanics , topological order , superconductivity , spin polarization , mathematical optimization , mathematics , acoustics , electron
We investigate the anisotropic S = 1/2 Kitaev model on the honeycomb lattice with the ordered-flux structure. By diagonalizing the Majorana Hamiltonian for the flux configuration, we find two distinct gapped quantum spin liquids. One of them is the gapped state realized in the large anisotropic case, where low energy properties are described by the toric code. On the other hand, when the system has small anisotropy, the other gapped quantum spin liquid is stabilized by the ordered-flux configuration. Since these two gapped quantum spin liquids are separated by the gapless region, these are not adiabatically connected to each other.