Resonant-photoemission study of the mechanism for room-temperature-alloyed interface formation of Au and Ag on Si(111)-(2×1)

1988 ◽  
Vol 38 (2) ◽  
pp. 1047-1051 ◽  
Author(s):  
Motohiro Iwami ◽  
Masakazu Kubota ◽  
Tadashi Koyama ◽  
Hiroshi Tochihara ◽  
Yoshitada Murata
1997 ◽  
Vol 04 (01) ◽  
pp. 25-31 ◽  
Author(s):  
SHIHONG XU ◽  
FAPEI ZHANG ◽  
ERDONG LU ◽  
XIAOJIANG YU ◽  
FAQIANG XU ◽  
...  

Soft-X-ray photoemission spectroscopy was used to characterize the Gd/GaAs(100)-interface formation at room temperature. At low Gd coverage (<1 Å), the interface is near-abrupt, because no evidence of reaction is observed. With increasing Gd coverage, photoemission signals from chemically reacted product at the interface are observed, causing some intermixing between the overlayer and the substrate. For As atoms, they remain near the interface and have little diffusion. Ga atoms, however, are not kept near the interface, and they can diffuse into the Gd overlayer and segregate onto the surface instead. From the observed variations with metal coverage of binding energies and relative intensities of photoemission signals from the reacted layer, a profile of the interface structure is proposed, and some parameters (decaying length, segregation density and solution density, etc.) have been obtained. The results show that the deposition of Gd onto the GaAs (100) surface induces limited substrate disruption except for some diffusion and segregation of Ga atoms into the metal overlayer. This paper demonstrates that the disruption and epitaxial growth are not mutually exclusive in the Gd / GaAs (100) system.


2000 ◽  
Vol 281-282 ◽  
pp. 729-730 ◽  
Author(s):  
K Matsuda ◽  
A Sekiyama ◽  
S Suga ◽  
S Imada ◽  
Y Saitoh ◽  
...  

1999 ◽  
Vol 111 (7) ◽  
pp. 373-378 ◽  
Author(s):  
A Sekiyama ◽  
S Suga ◽  
Y Saitoh ◽  
S Ueda ◽  
H Harada ◽  
...  

2007 ◽  
Vol 601 (21) ◽  
pp. 5077-5082 ◽  
Author(s):  
K. Edamoto ◽  
T. Nagayama ◽  
K. Ozawa ◽  
S. Otani

1999 ◽  
Vol 143 (1-4) ◽  
pp. 104-114 ◽  
Author(s):  
S. Sloboshanin ◽  
H. Engelhard ◽  
A. Goldmann ◽  
J.A. Schaefer

1995 ◽  
Vol 52 (16) ◽  
pp. 11853-11858 ◽  
Author(s):  
S. Shin ◽  
A. Agui ◽  
M. Fujisawa ◽  
Y. Tezuka ◽  
T. Ishii ◽  
...  

1987 ◽  
Vol 36 (12) ◽  
pp. 6681-6684 ◽  
Author(s):  
J. Derrien ◽  
M. De Crescenzi ◽  
E. Chainet ◽  
C. d’Anterroches ◽  
C. Pirri ◽  
...  

1993 ◽  
Vol 293 (1-2) ◽  
pp. 41-46 ◽  
Author(s):  
V.Di Castro ◽  
G. Polzonetti ◽  
S. Ciampi ◽  
G. Contini ◽  
O. Sakho

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