Abstract
Molybdenum films are obtained by quenched condensation of the metal vapour onto a He-cooled substrate. During annealing the electrical resistance decreases over a small temperature range; this is the typical behaviour of amorphous metals. The films, about 300 Å thick and with a high resistivity, have a positive Hall effect. The transition temperature T c = 8.0 K is strongly enhanced compared to crystalline Mo. The upper critical field strongly enhanced compared to crystalline Mo. The upper critical field B c2 ( T) has been measured. In the examined field range up to 80 kG, B c2 is a linear function of temperature; the slope has the large value d B c2 /d T = -45 kG/K.
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