Disordering of the Ge(001) surface studied by He atom scattering
2000
Details
Title
Disordering of the Ge(001) surface studied by He atom scattering
Author(s)
Cvetko, D. ; Floreano, L. ; Crottini, A. ; Morgante, A. ; Tommasini, F.
Published in
Surface Science
Volume
447
Issue
1-3
Pages
L147-L151
Date
2000
Keywords
X-RAY-DIFFRACTION; PHASE-TRANSITION; HIGH-TEMPERATURE; SI(001) SURFACE; RECONSTRUCTION; C(4X2); ENERGY; METALLIZATION; GE(111); DEFECTS AB The Ge(001) surface is known to undergo phase transitions from c(4 x 2); to (2 x 1) at low temperature and from (2 x 1) to (I x 1) at high; temperature. In the former case the phase transition is shown to occur; at 240 K and to fall into the 2D Ising universality class. The high; temperature phase transition takes place above 900 K and is; characterized by (2 x 1) domain wall proliferation; thus indicating an; order-disorder character. We have also observed an increase in the; density of steps; but these are shown to be only partially involved in; the disordering of the (2 x 1) phase. (C) 2000 Elsevier Science B.V.; All rights reserved.
Note
TASC, Lab INFM, I-34012 Trieste, Italy. Sincrotrone Trieste SCPA, I-34012 Trieste, Italy. Univ Trieste, Dipartmento Fis, I-34127 Trieste, Italy. Floreano, L, TASC, Lab INFM, Padriciano 99, I-34012 Trieste, Italy. ISI Document Delivery No.: 289JA Cited References: ALVAREZ J, 1996, PHYS REV B, V54, P5581 CVETKO D, 1992, MEAS SCI TECHNOL, V3, P997 FARIAS D, 1997, PHYS REV B, V55, P7023 FERRER S, 1995, PHYS REV LETT, V75, P1771 GLEBOV AL, 1999, PHYS REV LETT, V82, P3300 IHM J, 1983, PHYS REV LETT, V51, P1872 INOUE K, 1994, PHYS REV B, V49, P14774 JOHNSON AD, 1991, PHYS REV B, V44, P1134 KEVAN SD, 1984, PHYS REV LETT, V53, P702 KEVAN SD, 1985, PHYS REV B, V32, P2344 KUBOTA M, 1994, PHYS REV B, V49, P4810 LELAY G, 1992, PHYS REV B, V45, P6692 LUCAS CA, 1993, PHYS REV B, V47, P10375 MELI CA, 1994, J CHEM PHYS, V101, P7139 MELI CA, 1995, PHYS REV LETT, V74, P2054 MODESTI S, 1994, PHYS REV LETT, V73, P1951 NAKAMURA Y, 1997, PHYS REV B, V55, P10549 STUMPF R, 1993, PHYS REV B, V47, P16016 TAKEUCHI N, 1994, PHYS REV LETT, V72, P2227 WILLIS RF, 1985, DYNAMICAL PHENOMENA, V11 ZANDVLIET HJW, 1991, SOLID STATE COMMUN, V78, P455 NR 21 TC 15 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028
Laboratories
LOEQ
Record Appears in
Scientific production and competences > SB - School of Basic Sciences > SB Archives > LOEQ - Laboratory of Quantum Optoelectronics
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Peer-reviewed publications
Work produced at EPFL
Journal Articles
Published
Record creation date
2007-08-31