Evidence of temperature dependence of initial adsorption sites of Ge atoms on Si(111)-7 x 7

by: Zubaida A Ansari, Masahiko Tomitori, Toyoko Arai

Applied Physics Letters, Vol. 88, No. 17. (2006)

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Abstract

Small amounts of Ge atoms are deposited on Si(111)-7×7 surfaces at room temperature (RT) and at 100 °C to clarify the initial adsorption sites using scanning tunneling microscopy. At RT Ge atoms are adsorbed at high coordination B2 sites around the rest atoms, as predicted by Cho and Kaxiras [Surf. Sci. 396, L261 (1998)]. On one hand, at 100 °C Ge atoms are adsorbed on corner adatom sites. With increasing Ge coverage the corner sites are gradually occupied, followed by Ge adsorption at center adatom sites, resulting in Ge cluster growth with a size of the half unit cell. ©2006 American Institute of Physics

@article{citeulike:771496, abstract = {Small amounts of Ge atoms are deposited on Si(111)-7\×7 surfaces at room temperature (RT) and at 100\ \ \°C to clarify the initial adsorption sites using scanning tunneling microscopy. At RT Ge atoms are adsorbed at high coordination B2 sites around the rest atoms, as predicted by Cho and Kaxiras [Surf. Sci. 396, L261 (1998)]. On one hand, at 100\ \ \°C Ge atoms are adsorbed on corner adatom sites. With increasing Ge coverage the corner sites are gradually occupied, followed by Ge adsorption at center adatom sites, resulting in Ge cluster growth with a size of the half unit cell. \©2006 American Institute of Physics}, author = {Ansari, Zubaida A. and Tomitori, Masahiko and Arai, Toyoko }, citeulike-article-id = {771496}, doi = {10.1063/1.2198109}, journal = {Applied Physics Letters}, keywords = {clusters, si-7x7}, number = {17}, posted-at = {2006-07-24 15:40:10}, priority = {2}, publisher = {AIP}, title = {Evidence of temperature dependence of initial adsorption sites of Ge atoms on Si(111)-7 x 7}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=APPLAB000088000017171902000001\&idtype=cvips\&gifs=yes}, volume = {88}, year = {2006} }

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TY - JOUR ID - citeulike:771496 L3 - citeulike-article-id:771496 TI - Evidence of temperature dependence of initial adsorption sites of Ge atoms on Si(111)-7 x 7 JF - Applied Physics Letters VL - 88 IS - 17 PB - AIP N2 - Small amounts of Ge atoms are deposited on Si(111)-7×7 surfaces at room temperature (RT) and at 100  °C to clarify the initial adsorption sites using scanning tunneling microscopy. At RT Ge atoms are adsorbed at high coordination B2 sites around the rest atoms, as predicted by Cho and Kaxiras [Surf. Sci. 396, L261 (1998)]. On one hand, at 100  °C Ge atoms are adsorbed on corner adatom sites. With increasing Ge coverage the corner sites are gradually occupied, followed by Ge adsorption at center adatom sites, resulting in Ge cluster growth with a size of the half unit cell. ©2006 American Institute of Physics KW - clusters KW - si-7x7 AU - Ansari, Zubaida AU - Tomitori, Masahiko AU - Arai, Toyoko PY - 2006/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000088000017171902000001&idtype=cvips&gifs=yes ER -

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