Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
RECONSTRUCTION OF THE PT(111) SURFACE - X-RAY-SCATTERING MEASUREMENTS
Autore:
GRUBEL G; HUANG KG; GIBBS D; ZEHNER DM; SANDY AR; MOCHRIE SGJ;
Indirizzi:
EUROPEAN SYNCHROTRON RADIAT FACIL,BP 220 F-38043 GRENOBLE FRANCE BROOKHAVEN NATL LAB,DEPT PHYS UPTON NY 11970 OAK RIDGE NATL LAB,DIV SOLID STATE OAK RIDGE TN 37831 MIT,DEPT PHYS CAMBRIDGE MA 02139
Titolo Testata:
Physical review. B, Condensed matter
fascicolo: 24, volume: 48, anno: 1993,
pagine: 18119 - 18139
SICI:
0163-1829(1993)48:24<18119:ROTPS->2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMMENSURATE-INCOMMENSURATE TRANSITION; BROMINE-INTERCALATED GRAPHITE; SOLID KRYPTON MONOLAYERS; AU(001) SURFACE; AU(111) SURFACE; ORIENTATIONAL EPITAXY; SINGLE-CRYSTALS; STRESS TENSOR; 2 DIMENSIONS; POTTS-MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
G. Grubel et al., "RECONSTRUCTION OF THE PT(111) SURFACE - X-RAY-SCATTERING MEASUREMENTS", Physical review. B, Condensed matter, 48(24), 1993, pp. 18119-18139

Abstract

The structure and phase behavior of the clean Pt(lll) surface has been studied between 300 K and 0.92T(m) via x-ray scattering. The surfaceis unreconstructed at low temperatures (T<0.65T(m)). For temperaturesgreater than T-c=0.65T(m), we find that the top layer undergoes a continuous commensurate-incommensurate transformation into a translationally and orientationally disordered discommensuration-fluid phase, which is isotropically compressed relative to the bulk(lll) planes. A disordered arrangement of discommensurations separates regions of ideal face-centered-cubic ABC stacking from regions of faulted ABA stacking. As the temperature is increased, the compression of the surface layer increases and the incommensurability (delta) follows a power-law versusreduced temperature with an exponent equal to 1/3. For temperatures increasing above 0.75T(m), sixfold orientational ordering of the discommensurations develops and increases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 00:46:08