期刊
PHYSICAL REVIEW B
卷 95, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.95.115141
关键词
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资金
- Spanish MINECO [MTM201454240- P]
- QUITEMAD project/Comunidad de Madrid [S2013/ICE-2801]
- NCCR QSIT
- European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [648913]
- EPSRC [EP/I038683/1]
- EPSRC CDT
- EPSRC [EP/I038683/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [1230315] Funding Source: researchfish
The boundary of a two-dimensional topological superconductor can be modeled by a conformal field theory. Here we demonstrate the behaviors of this high level description emerging from a microscopic model at finite temperatures. To achieve that, we analyze the low-energy sector of Kitaev's honeycomb lattice model and probe its energy current. We observe that the scaling of the energy current with temperature reveals the central charge of the conformal field theory, which is in agreement with the Chern number of the bulk. Importantly, these currents can discriminate between distinct topological phases at finite temperatures. We assess the resilience of this measurement of the central charge under coupling disorder, bulk dimerization, and defects at the boundary, thus establishing it as a favorable means of experimentally probing topological superconductors.
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