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Electronic structure of thin epitaxial Be films on Si(111)

Polley, C. M. LU and Balasubramanian, T. LU (2024) In Surface Science 741.
Abstract

We show that single crystal films of Be can be grown on Si(111) substrates, exhibiting nearly identical surface electronic bandstructure to that found on the pristine Be(0001) surface of bulk Be. Segregation of silicon atoms into the film causes strong doping of the surface states. For sufficiently thin films, the quality and uniformity are sufficient to observe well-defined quantum well states. In addition to making single-crystal beryllium more accessible for future studies, thin film growth of beryllium on high-resistivity silicon substrates may open up new possibilities to investigate earlier suggestions of surface superconductivity.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ARPES, Beryllium, Quantum wells
in
Surface Science
volume
741
article number
122436
publisher
Elsevier
external identifiers
  • scopus:85179584281
ISSN
0039-6028
DOI
10.1016/j.susc.2023.122436
language
English
LU publication?
yes
id
d7fabf58-d1a0-4192-838b-7be897ba6985
date added to LUP
2024-01-31 10:12:45
date last changed
2024-01-31 10:14:18
@article{d7fabf58-d1a0-4192-838b-7be897ba6985,
  abstract     = {{<p>We show that single crystal films of Be can be grown on Si(111) substrates, exhibiting nearly identical surface electronic bandstructure to that found on the pristine Be(0001) surface of bulk Be. Segregation of silicon atoms into the film causes strong doping of the surface states. For sufficiently thin films, the quality and uniformity are sufficient to observe well-defined quantum well states. In addition to making single-crystal beryllium more accessible for future studies, thin film growth of beryllium on high-resistivity silicon substrates may open up new possibilities to investigate earlier suggestions of surface superconductivity.</p>}},
  author       = {{Polley, C. M. and Balasubramanian, T.}},
  issn         = {{0039-6028}},
  keywords     = {{ARPES; Beryllium; Quantum wells}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Surface Science}},
  title        = {{Electronic structure of thin epitaxial Be films on Si(111)}},
  url          = {{http://dx.doi.org/10.1016/j.susc.2023.122436}},
  doi          = {{10.1016/j.susc.2023.122436}},
  volume       = {{741}},
  year         = {{2024}},
}