Temperature-dependent Lorenz number in a GaAs hydrodynamic mesoscopic channel indicates violation of the Wiedemann-Franz law, with narrow constrictions playing a key role.
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Spectroscopy of Heat Transport and Violation of the Wiedemann--Franz Law in a GaAs Hydrodynamic Mesoscopic Channel
Temperature-dependent Lorenz number in a GaAs hydrodynamic mesoscopic channel indicates violation of the Wiedemann-Franz law, with narrow constrictions playing a key role.