Heatmap from Scientific Research

Map of the current-induced local excess temperature delta T(x,y) relative to the base temperature T 0 = 4.3 K, generated by a unipolar square-wave current excitation of I = 25 microA in the WTe 2 device at B = 0.64 T. Regions with negative deltaT are cooled by the current to below T 0.

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