Journal
PHYSICAL REVIEW LETTERS
Volume 97, Issue 14, Pages -Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.97.146803
Keywords
-
Categories
Ask authors/readers for more resources
The electronic structure of Bi(001) ultrathin films (thickness >= 7 bilayers) on Si(111)-7x7 was studied by angle-resolved photoemission spectroscopy and first-principles calculations. In contrast with the semimetallic nature of bulk Bi, both the experiment and theory demonstrate the metallic character of the films with the Fermi surface formed by spin-orbit-split surface states (SSs) showing little thickness dependence. Below the Fermi level, we clearly detected quantum well states (QWSs) at the M ($) over bar point, which were surprisingly found to be non-spin-orbit split; the films are electronically symmetric despite the obvious structural nonequivalence of the top and bottom interfaces. We found that the SSs hybridize with the QWSs near M ($) over bar and lose their spin-orbit-split character.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available