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Existence of a stable intermixing phase for monolayer Ge on Si(001)
被引:40
|作者:
Yeom, HW
Sasaki, M
Suzuki, S
Sato, S
Hosoi, S
Iwabuchi, M
Higashiyama, K
Fukutani, H
Nakamura, M
Abukawa, T
Kono, S
机构:
[1] UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN
[2] TOHOKU UNIV,FAC SCI,DEPT PHYS,SENDAI,MIYAGI 98077,JAPAN
关键词:
Auger electron diffraction;
germanium;
growth;
low energy electron diffraction (LEED);
low index single crystal surfaces;
silicon;
single crystal epitaxy;
x-ray photoelectron spectroscopy;
D O I:
10.1016/S0039-6028(97)00047-2
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
A monolayer adsorption of Ge on a single-domain Si(001)2x1 surface has been investigated by X-ray excited Auger electron diffraction (AED) and scanning tunneling microscopy. Contrary to the common belief, a significant intermixing of Ge down to at least the fourth layer is identified. This intermixing is found to progress to a stable interface alloy phase that develops fully for annealing at 500-600 degrees C. A possible reason for the alloy phase is discussed to be an elastic interaction from the Si(001) surface. (C) 1997 Elsevier Science B.V.
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页码:L533 / L539
页数:7
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