Surface state electrons on solid hydrogen films

✍ Scribed by U. Albrecht; H. Dilger; P. Leiderer; K. Kono

• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 368 KB
• Volume: 165-166
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/s0921-4526(09)80006-9

✦ Synopsis

We investigated the surface of quench condensed hydrogen films on a glass substrate by measuring the conductivity of surface state electrons (SSE) between 1.5 and 4.2 K. Initially the films were very rough (no conductivity signal). After thermal annealing the SSE conductivity increased drastically, behaving with temperature like a thermally activated process. Saturated helium films on the hydrogen led to a large increase in the SSE conductivity. Shortly before helium film completion a sharp dip in the conductivity is observed.