TEMPERATURE DEPENDENCE OF IRIDIUM FIELD EVAPORATION RATE

A. Menand , D. Blavette

The possibility of ionic tunneling has been suggested previously by several authors, and some experiments have been already reported giving indication for the quantum mechanical tunneling of W or B ions at low temperatures. We performed FIM experiments on Iridium to determine the temperature dependence of the relative field evaporation rate (in layers per second). The results show two different regimes at high and low temperatures, with a transition temperature between 35 K and 40 K. The much more smaller temperature dependence at low temperature is interpreted as being indicative of a tunneling mechanism of field desorption of Iridium ions below 35 K.

Domaines: Articles anciens

A. Menand, D. Blavette. TEMPERATURE DEPENDENCE OF IRIDIUM FIELD EVAPORATION RATE. Journal de Physique Colloques, 1986, 47 (C7), pp.C7-17-C7-20. ⟨10.1051/jphyscol:1986704⟩. ⟨jpa-00225893⟩