Identifying Chern numbers of superconductors from local measurements
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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2023
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en
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SciPost physics core, Volume 6, issue 4
Abstract
Fascination in topological materials originates from their remarkable response properties and exotic quasiparticles which can be utilized in quantum technologies. In particular, large-scale efforts are currently focused on realizing topological superconductors and their Majorana excitations. However, determining the topological nature of superconductors with current experimental probes is an outstanding challenge. This shortcoming has become increasingly pressing due to rapidly developing designer platforms which are theorized to display very rich topology and are better accessed by local probes rather than transport experiments. We introduce a robust machine learning protocol for classifying the topological states of two-dimensional (2D) chiral superconductors and insulators from local density of states (LDOS) data. Since the LDOS can be measured with standard experimental techniques, our protocol contributes to overcoming the almost three decades standing problem of identifying the topological phase of 2D superconductors with broken time-reversal symmetry.Description
Funding Information: Funding information M.P. and T.H. were supported by the Foundation for Polish Science through the IRA Programme co-financed by EU within SG OP. T.O. acknowledges project funding from the Academy of Finland and Helsinki Institute of Physics. Publisher Copyright: © 2023 The Author(s).
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Baireuther, P, Płodzién, M, Ojanen, T, Tworzydło, J & Hyart, T 2023, ' Identifying Chern numbers of superconductors from local measurements ', SciPost physics core, vol. 6, no. 4, 087 . https://doi.org/10.21468/SciPostPhysCore.6.4.087