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arXiv · 1904.05758

Effect of charge renormalization on electric and thermo-electric transport along the vortex lattice of a Weyl superconductor

G. Lemut·M. J. Pacholski·İ. Adagideli·C. W. J. Beenakker
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Abstract

Building on the discovery that a Weyl superconductor in a magnetic field supports chiral Landau level motion along the vortex lines, we investigate its transport properties out of equilibrium. We show that the vortex lattice carries an electric current $I=\tfrac{1}{2}(Q_{\rm eff}^2/h)(Φ/Φ_0) V$ between two normal metal contacts at voltage difference $V$, with $Φ$ the magnetic flux through the system, $Φ_0$ the superconducting flux quantum, and $Q_{\rm eff}<e$ the renormalized charge of the Weyl fermions in the superconducting Landau level. Because the charge renormalization is energy dependent, a nonzero thermo-electric coefficient appears even in the absence of energy-dependent scattering processes.

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G. Lemut, M. J. Pacholski, İ. Adagideli, C. W. J. Beenakker. 2019-06-02. Effect of charge renormalization on electric and thermo-electric transport along the vortex lattice of a Weyl superconductor. https://doi.org/10.1103/physrevb.100.035417

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