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Synchrotron-radiation soft-x-ray photoemission study of lead on Bi2CaSr2Cu2O8

Bernhoff, H.; Söderholm, S.; Karlsson, U. O. LU ; Flodström, S. A.; Qvarford, M.; Andersen, J. N. LU ; Nyholm, R. LU and Lindau, I. LU (1992) In Physical Review B (Condensed Matter) 46(10). p.6488-6494
Abstract

In this paper we present a study of the interaction of Pb with a clean single-crystal Bi2CaSr2Cu2O8 superconductor surface based on photoemission and low-energy electron diffraction (LEED). Deposition of Pb on a Bi2CaSr2Cu2O8 crystal kept at room temperature gives rise to the formation of metallic Bi and oxidized Pb at the interface. This behavior could not be observed when the crystal was kept at 100 K during Pb deposition. For all investigated Pb overlayers on a cold crystal (100 K), surface-sensitive photoelectron spectroscopy revealed the growth of a covering metallic Pb overlayer film. The growth at 100 K, contrary to the growth at room temperature, preserved the original LEED 5×1 pattern even for Pb depositions corresponding to a... (More)

In this paper we present a study of the interaction of Pb with a clean single-crystal Bi2CaSr2Cu2O8 superconductor surface based on photoemission and low-energy electron diffraction (LEED). Deposition of Pb on a Bi2CaSr2Cu2O8 crystal kept at room temperature gives rise to the formation of metallic Bi and oxidized Pb at the interface. This behavior could not be observed when the crystal was kept at 100 K during Pb deposition. For all investigated Pb overlayers on a cold crystal (100 K), surface-sensitive photoelectron spectroscopy revealed the growth of a covering metallic Pb overlayer film. The growth at 100 K, contrary to the growth at room temperature, preserved the original LEED 5×1 pattern even for Pb depositions corresponding to a 24- thick overlayer indicating epitaxial growth. Furthermore, a rigid 0.4-eV shift of the valence band and the Bi 5d core levels is observed upon initial Pb deposition and is tentatively attributed to electron doping. © 1992 The American Physical Society.

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author
organization
publishing date
type
Contribution to journal
publication status
published
in
Physical Review B (Condensed Matter)
volume
46
issue
10
pages
7 pages
publisher
American Physical Society
external identifiers
  • Scopus:1542476162
ISSN
0163-1829
DOI
10.1103/PhysRevB.46.6488
language
English
LU publication?
yes
id
0010049e-3b79-4dff-9706-91ffba0ca441
date added to LUP
2016-05-17 14:20:32
date last changed
2016-05-21 11:46:21
@misc{0010049e-3b79-4dff-9706-91ffba0ca441,
  abstract     = {<p>In this paper we present a study of the interaction of Pb with a clean single-crystal Bi2CaSr2Cu2O8 superconductor surface based on photoemission and low-energy electron diffraction (LEED). Deposition of Pb on a Bi2CaSr2Cu2O8 crystal kept at room temperature gives rise to the formation of metallic Bi and oxidized Pb at the interface. This behavior could not be observed when the crystal was kept at 100 K during Pb deposition. For all investigated Pb overlayers on a cold crystal (100 K), surface-sensitive photoelectron spectroscopy revealed the growth of a covering metallic Pb overlayer film. The growth at 100 K, contrary to the growth at room temperature, preserved the original LEED 5×1 pattern even for Pb depositions corresponding to a 24- thick overlayer indicating epitaxial growth. Furthermore, a rigid 0.4-eV shift of the valence band and the Bi 5d core levels is observed upon initial Pb deposition and is tentatively attributed to electron doping. © 1992 The American Physical Society.</p>},
  author       = {Bernhoff, H. and Söderholm, S. and Karlsson, U. O. and Flodström, S. A. and Qvarford, M. and Andersen, J. N. and Nyholm, R. and Lindau, I.},
  issn         = {0163-1829},
  language     = {eng},
  number       = {10},
  pages        = {6488--6494},
  publisher    = {ARRAY(0x45ffb40)},
  series       = {Physical Review B (Condensed Matter)},
  title        = {Synchrotron-radiation soft-x-ray photoemission study of lead on Bi2CaSr2Cu2O8},
  url          = {http://dx.doi.org/10.1103/PhysRevB.46.6488},
  volume       = {46},
  year         = {1992},
}