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Unidirectional superconductivity and superconducting diode effect induced by dissipation
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Unidirectional superconductivity and superconducting diode effect induced by dissipation
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A general principle of condensed matter physics prohibits the electric current in equilibrium. This prevents a zero-resistance state realized solely under a finite electric current, namely unidirectional superconductivity. In this paper, we propose a setup to realize the unidirectional superconductivity as a nonequilibrium steady state. We focus on the in-plane transport of atomically thin bilayer superconductors lacking the in-plane inversion symmetry and introduce dissipation by applying the out-of-plane electric field and current. By analyzing the time-dependent Ginzburg-Landau equations, we show that locally stable steady-state solutions appear only under the in-plane supercurrent when the out-of-plane electric field exceeds a threshold value. Our system also realizes the dissipation-induced superconducting diode effect up to 100% efficiency by purely electric means.
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Cited by 1 Pith paper
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Thermodynamic Constraints on Perfect Equilibrium Superconducting Diodes
Perfect equilibrium superconducting diodes are thermodynamically forbidden; near-perfect rectification requires tuning into a phase transition inside the superconducting state, with a polynomial-Landau bound limiting ...
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