Giant nonreciprocal magnetotransport in bulk trigonal superconductor PbTaSe_{2}

Giant nonreciprocal magnetotransport in bulk trigonal superconductor PbTaSe_{2}

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We report giant bulk rectification in the bulk trigonal superconductor PbTaSe_{2}.Nonreciprocal magnetotransport originating from a vortex ratchet motion was successfully observed, showing a significant enhancement during the superconducting transition, which is considered a model behavior for three-dimensional noncentrosymmetric superconductors with Handlebar Quick Button Set-Speed Assembly strong vortex pinning.Moreover, an unprecedented sign change of nonreciprocal transport was observed with increasing current, which indicates that the PL-L rectification effect can be tuned by the current value as well as the magnetic field.

The present results represent the rich vortex dynamics and offer a principle for current control of rectification in noncentrosymmetric bulk superconductors.