The growth of Ag deposited onto the GaAs(001)2 x 4 has been investigated by means of scanning tunnelling microscopy. Silver forms islands (Volmer-Weber growth) whose average dimension increases according to Theta(1/z) (with z = 4.2). Theta being the number of Ag atoms deposited at constant rate onto GaAs. The Ag islands exhibit a hut shape with {210} and {310} facets. The kinetic of surface coverage has been measured and the Avrami exponent, 12, has been determined, finding n = 0.61. Both z and n are related to the dynamic nature of the growth process. (C) 2000 Elsevier Science S.A. All rights reserved.
Placidi, E., Fanfoni, M., Arciprete, F., Patella, F., Motta, N., Balzarotti, A. (2000). Scaling law and dynamical exponent in the Volmer-Weber growth mode: silver on GaAs(001)2 x 4. In MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY (pp.243-246). LAUSANNE : ELSEVIER SCIENCE SA.
Scaling law and dynamical exponent in the Volmer-Weber growth mode: silver on GaAs(001)2 x 4
FANFONI, MASSIMO;ARCIPRETE, FABRIZIO;PATELLA, FULVIA;BALZAROTTI, ADALBERTO
2000-01-01
Abstract
The growth of Ag deposited onto the GaAs(001)2 x 4 has been investigated by means of scanning tunnelling microscopy. Silver forms islands (Volmer-Weber growth) whose average dimension increases according to Theta(1/z) (with z = 4.2). Theta being the number of Ag atoms deposited at constant rate onto GaAs. The Ag islands exhibit a hut shape with {210} and {310} facets. The kinetic of surface coverage has been measured and the Avrami exponent, 12, has been determined, finding n = 0.61. Both z and n are related to the dynamic nature of the growth process. (C) 2000 Elsevier Science S.A. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
