Topological bulk-edge effects in quantum graph transport

0524447 - ÚJF 2021 RIV NL eng J - Journal Article
Exner, Pavel - Lipovský, J.
Topological bulk-edge effects in quantum graph transport.
Physics Letters. A. Roč. 384, č. 18 (2020), č. článku 126390. ISSN 0375-9601. E-ISSN 1873-2429
Institutional support: RVO:61389005
Keywords : quantum graph * Vertex coupling * time-reversal non-invariance * topological properites
OECD category: Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Impact factor: 2.654, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.physleta.2020.126390

We examine quantum transport in periodic quantum graphs with a vertex coupling non-invariant with respect to time reversal. It is shown that the graph topology may play a decisive role in the conductivity properties illustrating this claim with two examples. In the first, the transport is possible at high energies in the bulk only being suppressed at the sample edges, while in the second one the situation is opposite, the transport is possible at the edge only.
Permanent Link: http://hdl.handle.net/11104/0308809