Thermal metal-insulator transition in a helical topological superconductor
I. C. Fulga, A. R. Akhmerov, J. Tworzydło, B. Béri, C. W. J. Beenakker
DOI 10.1103/PhysRevB.86.054505 · Physical Review B
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Abstract
Two-dimensional superconductors with time-reversal symmetry have a Z2 topological invariant, which distinguishes phases with and without helical Majorana edge states. We study the topological phase transition in a class-DIII network model and show that it is associated with a metal-insulator transition for the thermal conductance of the helical superconductor. The localization length diverges at the transition with critical exponent ν≈2.0, about twice the known value in a chiral superconductor.
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