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001-es BibID:	BIBFORM046133
Első szerző:	Katona Gábor (fizikus)
Cím:	Experimental evidence for a nonparabolic interface shift on the nanoscale during the dissolution of Ni into bulk Au (111) / G. L. Katona, Z. Erdélyi, D. L. Beke, Ch. Dietrich, F. Weigl, H.-G. Boyen, B. Koslowski, P. Ziemann
Dátum:	2005
ISSN:	0163-1829
Megjegyzések:	We report experimental evidence for the violation of the "diffusional parabolic law" (x proportional to t(0.5), where x is the interface shift and t is time) as predicted recently by computer simulation [Z. Erdelyi , Phys. Rev. B 69, 113407 (2004)] for a binary system with restricted mutual solubility. Using x-ray photoelectron spectroscopy we investigated the shift of the interface between a thin Ni layer (3 nm) deposited under UHV conditions on top of a Au(111) single crystal during its thermally driven dissolution into the Au substrate. From the temporal evolution of the Ni-2p and Au-4f core level intensities at various fixed temperatures, a power law could be extracted for the time dependence of the interface shift (proportional to t(kc)) with exponents in the range of 0.6-0.7. Thus, clear experimental evidence is provided that the kinetics of such a shift might differ from the well known parabolic law if restricted to the nanometer scale.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Physical Review B 71 : 1 (2005), p. 115432-1-115432-5. -
További szerzők:	Erdélyi Zoltán (1974-) (fizikus) Beke Dezső László (1945-) (fizikus) Dietrich, Ch. Weigl, Frank Boyen, Hans-Gerd Koslowski, Berndt Ziemann, Paul
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