Loading...
Please wait, while we are loading the content...
Similar Documents
Multiple topological phases of Kitaev-Heisenberg model on square-octagon lattice.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Deb, Moumita Ghosh, Asim Kumar |
| Copyright Year | 2019 |
| Abstract | A number of first order topological phases are found to emerge in the ferromagnetic Kitaev-Heisenberg model on square-octagon lattice in the presence of Dzyaloshinskii-Moriya interaction. Heisenberg and Kitaev terms have been considered on nearest and next-nearest neighbor bonds in a variety of ways. Both isotropic and anisotropic couplings are taken into account. Topological phases are characterized by Chern numbers for the distinct magnon bands as well as the number of modes for topologically protected gapless magnon edge states. Band structure, dispersion relation along the high-symmetric points of first Brillouin zone, density of states and thermal Hall conductance have been evaluated for every phase. Phase diagrams have been constructed. Topological phase transition is also noted in the parameter space. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://arxiv.org/pdf/1912.07877v1.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
