Superconducting Diode Effect in Multiphase Superconductors

Abstract

We identify a new mechanism for the intrinsic superconducting diode effect (SDE) in multiphase superconductors. Using a Ginzburg-Landau and a microscopic two-band model, we find phase transitions into a mixed phase with finite-momentum Cooper pairs and SDE with high (including maximal) diode efficiencies, despite the individual phases exhibiting no SDE and equal inversion parity. We thus show that parity mixing $-$ invoked in previous proposals $-$ is not a crucial ingredient for SDE. The new mechanism may be relevant in a multitude of known multiphase superconductors like UTe${}_2$.

10 pages, 4 figures, published version

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Cited by in corpus (9)

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• Josephson Diode Effect from Nonequilibrium Current in a Superconducting Interferometer
• Efficiency of the superconducting diode effect of pair-density-wave states in two-dimensional $d$-wave altermagnets
• Dissipation-enhanced non-reciprocal superconductivity: application to multi-valley superconductors
• Pair-mixing induced Time-reversal-breaking superconductivity
• Two-dimensional helical superconductivity and gapless superconducting edge modes in the 1T${}^{\prime }$-WS${}_2$/2H-WS${}_2$ heterophase bilayer
• Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes
• Observation of field-odd and field-free superconducting diode effects in ${\mathrm{Mo}}_2\mathrm{C}$ nanoflakes