QUANTUM-WELLS AND ELECTRON INTERFERENCE PHENOMENA IN AL DUE TO SUBSURFACE NOBLE-GAS BUBBLES

Authors
SCHMID M HEBENSTREIT W VARGA P CRAMPIN S
Citation
M. Schmid et al., QUANTUM-WELLS AND ELECTRON INTERFERENCE PHENOMENA IN AL DUE TO SUBSURFACE NOBLE-GAS BUBBLES, Physical review letters, 76(13), 1996, pp. 2298-2301
Citations number
17
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
13
Year of publication
1996
Pages
2298 - 2301
Database
ISI
SICI code
0031-9007(1996)76:13<2298:QAEIPI>2.0.ZU;2-I
Abstract
Scanning tunneling microscopy on Ar ion bombarded and annealed aluminu m surfaces shows electron interference between the surface and subsurf ace bubbles of implanted gas. The depth of the bubbles as determined f rom the energy dependence of the standing waves indicates a minimum ar ound 6-7 layers on Al(111). The appearance and energy dependence of th e interference pattern is in good agreement with scattering theory bas ed on free electrons, and indicates the bubbles have a shape given by the Wulff construction.