Structures and electrical conductance of the Si(111)-×-Ag surface with additional Ag adsorption at low temperatures
- 15 January 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 55 (3) , 1310-1313
- https://doi.org/10.1103/physrevb.55.1310
Abstract
A phase diagram in the coverage-temperature plane for surface superstructures induced by additional Ag adsorption onto the Si(111)-×-Ag surface at low temperatures is determined; a × phase below 250 K and a 6×6 phase below 170 K are formed completely at 0.14 and 0.18 ML, respectively. These structural transformations cause drastic changes in the electrical conductance; the phase has much higher conductivity than the initial and the 6 phases. The surface migration of Ag adatoms plays an important role in the phenomenon.
Keywords
This publication has 13 references indexed in Scilit:
- Atomic structures of Ag on
3 3 Ag Si (111)Surface Science, 1996 - Reconstruction and growth of Ag on the Si(111)-√3 × √3 -Ag surface at low temperaturePhysical Review B, 1995
- Au adatom superstructure on the Ag⧸Si(111)-√3 × √3 -R30° surfaceSurface Science, 1994
- Electrical characteristics of silver/silicon contactsApplied Surface Science, 1993
- Structure-dependent surface conductance at the initial stages in metal epitaxy on Si(111) surfacesThin Solid Films, 1993
- Surface structures and conductance at initial stages in epitaxy of metals on a Si(111) surfaceSurface Science, 1993
- Refinement of the
Si (111)3 3 Surface Science, 1993 - Surface structures and conductance at epitaxial growths of Ag and Au on the Si(111) surfacePhysical Review Letters, 1992
- Theoretical calculations of the scanning-tunneling-microscopy images of the Si(111)√3 × √3 -Ag surfacePhysical Review B, 1991
- Structure of the (√3 × √3 )R30° Ag/Si(111) surface from first-principles calculationsPhysical Review Letters, 1991