Nernst effect
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The Nernst Effect is a thermoelectric (or thermomagnetic) phenomenon observed when a semiconductor is subjected to a magnetic field and a temperature gradient at right angles to each other. An electric field will be induced at right angles to both.
This effect is quantified by the Nernst coefficient |N|, which is defined to be
where EY is the y-component of the electric field that results from the magnetic field's z-component BZ and the temperature gradient dT / dx.
The reverse process is known as the Ettinghausen effect.