Abstract

For our initial experiments, the system chosen was a thin narrow strip of pure tin 8.5 mm long, 20 μm wide, and 0.100 μm thick prepared by vacuum evaporation and a lift-off technique on a polished sapphire substrate. The sample was incorporated in a strip line configuration biased with a constant dc source (typically a few milliamperes) and immersed in a temperature-controlled liquid He bath.

© 1981 Optical Society of America