Temperature effect on the field emission from zirconium islands on tungsten

The coefficients α T of the change in the work function with temperature are determined experimentally for two-dimensional islands of zirconium on and in the vicinity of the {001} face of tungsten. The values of α T are an order of magnitude higher than those typical for clean metals. The reason is a change in the adatom-adatom binding energy with increasing temperature.

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