6–11 Jun 2021
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America/Toronto timezone
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Magneto-Thermal Conductivity Oscillations in Spin-Orbit-Coupled Nodal Superconductors

7 Jun 2021, 12:50
3m
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Underline Conference System

Oral (Non-Student) / Orale (non-étudiant(e)) Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM) M2-8 Contributed Talks I (DCMMP) / Conférences soumises I (DPMCM)

Speaker

Bill Atkinson (Trent University)

Description

The symmetries of unconventional superconductors may be classified by the locations of their gap nodes. Recently, the role of spin-orbit coupling (SOC) has become important, as sufficiently strong SOC generates novel mixed-parity superconductivity. In this talk, I show that the nodal structure of unconventional superconductors may be determined by angle-dependent magneto-thermal conductivity measurements, provided the SOC is larger than the quasiparticle scattering rate. This effect is complementary to vortex-induced magneto-thermal oscillations identified previously, and is dominant in strongly anisotropic materials. As an application, I present results for the magneto-thermal conductivity of the "Rashba bilayer" YBa$_2$Cu$_3$O$_{6.5}$, which possesses a so-called "hidden spin-orbit coupling." We find that the SOC endows $\kappa_{xx}/T$ with a characteristic field-angle dependence that should be easily observed experimentally.

Primary authors

Bill Atkinson (Trent University) Dr Arno Kampf (Augsburg University)

Presentation materials

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