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Titolo:
ABSENCE OF LONG-RANGE ORDERED RECONSTRUCTION ON THE GAAS(311)A SURFACE
Autore:
MORIARTY P; MA YR; DUNN AW; BETON PH; HENINI M; MCGINLEY C; MCLOUGHLIN E; CAFOLLA AA; HUGHES G; DOWNES S; TEEHAN D; MURPHY B;
Indirizzi:
UNIV NOTTINGHAM,DEPT PHYS,UNIV PK NOTTINGHAM NG7 2RD ENGLAND DUBLIN CITY UNIV,DEPT PHYS DUBLIN 9 IRELAND SERC,DARESBURY LAB WARRINGTON WA4 4AD CHESHIRE ENGLAND
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 23, volume: 55, anno: 1997,
pagine: 15397 - 15400
SICI:
0163-1829(1997)55:23<15397:AOLORO>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
SCANNING-TUNNELING-MICROSCOPY; GAAS; GAAS(100); GROWTH;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
15
Recensione:
Indirizzi per estratti:
Citazione:
P. Moriarty et al., "ABSENCE OF LONG-RANGE ORDERED RECONSTRUCTION ON THE GAAS(311)A SURFACE", Physical review. B, Condensed matter, 55(23), 1997, pp. 15397-15400

Abstract

We have investigated the decapped GaAs(311)A surface using both scanning tunneling microscopy and synchrotron-radiation photoemission. While our data are in broad agreement with the structural model of GaAs(311)A proposed in a recent study [Wassermeier et al., Phys. Rev. B 51, 14721 (1995)], we find considerable differences in the surface order. In particular, the As dimer rows are unbroken overmuch shorter length scales and are highly kinked. We observe a correspondingly lower degreeof anisotropy in the surface roughness than that previously reported. An (8 x 1) reconstruction was not observed. An analysis. of As 3d andGa 3d core-level photoemission spectra suggests that surface As atomsare in only one bonding configuration while surface Ga adopts two different bonding states. We discuss possible origins for the core-level spectra surface components.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 19:35:24