ION-SCATTERING STUDIES OF THE PB(110) SURFACE FROM 160-K TO 590-K

Autor(en): SPELLER, S
SCHLEBERGER, M
HEILAND, W
Stichwörter: AU(110) SURFACE; Chemistry; Chemistry, Physical; ENERGY; PHASE; Physics; Physics, Condensed Matter
Erscheinungsdatum: 1992
Herausgeber: ELSEVIER SCIENCE BV
Journal: SURFACE SCIENCE
Volumen: 269
Ausgabe: A
Startseite: 229
Seitenende: 234
Zusammenfassung: 
The (110) surface of Pb has been the subject of surface structure studies for the reason of surface melting phenomena, i.e., surface melting at 580 K < T less-than-or-equal-to T(m) and disordering at 500 less-than-or-equal-to T less-than-or-equal-to 580 K. Using low-energy ion channeling and neutral impact collision ion scattering spectrometry (NICISS) it is found that the disordering is a rather continuous process starting already at 160 K. Defects are identified as vacancies in the surface chains. Also step formation is an event on the surface observed with increasing temperature. The thermal vibrations of the surface atoms show no deviation from the Debye-Waller behaviour. An anomalous thermal expansion in the [110BAR] surface chains is found.
ISSN: 00396028
DOI: 10.1016/0039-6028(92)91255-A

Show full item record

Google ScholarTM

Check

Altmetric