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Photoemission study of the Bi2CaSr2Cu2O8 superconductor with Cu, Ag and Au overlayers

Bernhoff, H.; Qvarford, M.; Söderholm, S.; Nyholm, R. LU ; Karlsson, U. O.; Lindau, I. LU and Flodström, A. S. (1993) In Physica C: Superconductivity and its Applications 218(1-2). p.103-108
Abstract

In this paper, we present a photoemission study of the interaction of Cu, Ag and Au with clean single-crystal Bi2CaSr2Cu2O8 superconductor surfaces. Both the valence-band and the Bi 5d, O 1s and Sr 3d core levels were monitored for all overlayers. Cu, Ag and Au were deposited as consecutively thicker layers starting with a third of a monolayer and progressing in steps up to a deposition in the range of eight monolayers. Comparing the results for the different overlayers reveals the Ag overlayers to be less reactive than Au which causes the formation of metallic Bi on cleaved Bi2CaSr2Cu2O8 surface. Cu is shown to be the most reactive of the three... (More)

In this paper, we present a photoemission study of the interaction of Cu, Ag and Au with clean single-crystal Bi2CaSr2Cu2O8 superconductor surfaces. Both the valence-band and the Bi 5d, O 1s and Sr 3d core levels were monitored for all overlayers. Cu, Ag and Au were deposited as consecutively thicker layers starting with a third of a monolayer and progressing in steps up to a deposition in the range of eight monolayers. Comparing the results for the different overlayers reveals the Ag overlayers to be less reactive than Au which causes the formation of metallic Bi on cleaved Bi2CaSr2Cu2O8 surface. Cu is shown to be the most reactive of the three metals. The Au and Ag overlayers display an island-growth mode, while Cu grows in a layer-by-layer fashion. © 1993.

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author
organization
publishing date
type
Contribution to journal
publication status
published
in
Physica C: Superconductivity and its Applications
volume
218
issue
1-2
pages
6 pages
publisher
Elsevier
external identifiers
  • Scopus:0027871123
ISSN
0921-4534
DOI
10.1016/0921-4534(93)90272-R
language
English
LU publication?
yes
id
bf298b82-c86f-44cf-b152-af77d88baf36
date added to LUP
2016-05-04 16:35:32
date last changed
2016-05-21 11:45:59
@misc{bf298b82-c86f-44cf-b152-af77d88baf36,
  abstract     = {<p>In this paper, we present a photoemission study of the interaction of Cu, Ag and Au with clean single-crystal Bi<sub>2</sub>CaSr<sub>2</sub>Cu<sub>2</sub>O<sub>8</sub> superconductor surfaces. Both the valence-band and the Bi 5d, O 1s and Sr 3d core levels were monitored for all overlayers. Cu, Ag and Au were deposited as consecutively thicker layers starting with a third of a monolayer and progressing in steps up to a deposition in the range of eight monolayers. Comparing the results for the different overlayers reveals the Ag overlayers to be less reactive than Au which causes the formation of metallic Bi on cleaved Bi<sub>2</sub>CaSr<sub>2</sub>Cu<sub>2</sub>O<sub>8</sub> surface. Cu is shown to be the most reactive of the three metals. The Au and Ag overlayers display an island-growth mode, while Cu grows in a layer-by-layer fashion. © 1993.</p>},
  author       = {Bernhoff, H. and Qvarford, M. and Söderholm, S. and Nyholm, R. and Karlsson, U. O. and Lindau, I. and Flodström, A. S.},
  issn         = {0921-4534},
  language     = {eng},
  month        = {12},
  number       = {1-2},
  pages        = {103--108},
  publisher    = {ARRAY(0x8857170)},
  series       = {Physica C: Superconductivity and its Applications},
  title        = {Photoemission study of the Bi2CaSr2Cu2O8 superconductor with Cu, Ag and Au overlayers},
  url          = {http://dx.doi.org/10.1016/0921-4534(93)90272-R},
  volume       = {218},
  year         = {1993},
}