Crystal produces a thermal Hall signal (IMAGE)

Princeton University

Crystal produces a thermal Hall signal

Caption

The upper panel shows a sketch of the experiment. In a magnetic field, a heat current (red arrow) applied to the crystal produces a thermal Hall signal that arises from bosonic excitations (orange balls) moving along the edges. The lower panel is a color map of the thermal Hall signal (scale bar on the right) plotted versus magnetic field H and temperature T. The signal is largest in the red regions, close to zero in the light-green regions and slightly negative in the blue spot.

Credit

Peter Czajka, Princeton University

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