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Topologically protected Landau level in the vortex lattice of a weyl superconductor

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Pacholski, M. J. and Beenakker, C. W. J. and Adagideli, İnanç (2018) Topologically protected Landau level in the vortex lattice of a weyl superconductor. Physical Review Letters, 121 (3). ISSN 0031-9007 (Print) 1079-7114 (Online)

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.121.037701

Abstract

The question whether the mixed phase of a gapless superconductor can support a Landau level is a celebrated problem in the context of d-wave superconductivity, with a negative answer: the scattering of the subgap excitations (massless Dirac fermions) by the vortex lattice obscures the Landau level quantization. Here we show that the same question has a positive answer for a Weyl superconductor: the chirality of the Weyl fermions protects the zeroth Landau level by means of a topological index theorem. As a result, the heat conductance parallel to the magnetic field has the universal value G=12g0Φ/Φ0, with Φ as the magnetic flux through the system, Φ0 as the superconducting flux quantum, and g0 as the thermal conductance quantum.

Item Type:Article
Subjects:Q Science > QC Physics
Q Science > QC Physics > QC176-176.9 Solids. Solid state physics
ID Code:35663
Deposited By:İnanç Adagideli
Deposited On:15 Aug 2018 22:43
Last Modified:15 Aug 2018 22:43

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