A thermodynamic probe of the topological phase transition in epitaxial graphene based Floquet topological insulator
arXiv:2012.02172 · doi:10.1063/5.0071224
Abstract
One can use light to tune certain materials, from a trivial to a topological phase. A prime example of such materials, classified as Floquet topological insulators (FTI), is epitaxial graphene. In this paper, we probe the topological phase transition of an FTI via the efficiency and work output of quantum Otto and quantum Stirling heat engines. A maximum/minimum in the efficiency or work output invariably signals the phase transition point. Further, both engines' work output and efficiency are markedly robust against the polarization direction of light.
arXiv comment24 pages, 10 figures, accepted for publication in Journal of Applied Physics (2021)
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