The tip role on STM images of Ag/Si(111)√3 × √3

Zhang, Hanmin; Gustafsson, Jörgen; Johansson, Lars

doi:10.1088/1742-6596/61/1/264

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…[21][22][23] However, Zhang et al report that the IET structure can exist statically even at room temperature. 24,25 In the present work, we observe only the apparent HCT structure.…”

Section: Experimental and Computational Detailscontrasting

confidence: 49%

Islands and holes as measures of mass balance in growth of the(3×3)R30°phase of Ag on Si(111)

et al. 2010

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It is well known that conversion of Si(111)-(7×7) into the (√3×√3)R30° phase of adsorbed Ag requires a change in the Si density, and causes formation of islands and holes at the surface. By mass balance, the ratio of areas of islands and holes (R IH) should be approximately 1. However, we find that the ratio is significantly higher, depending on preparation conditions. A possible explanation would be that there are different types of (√3×√3)R30° structures. However, neither scanning tunneling microscopy nor density-functional theory (implemented as a genetic algorithm search) supports this explanation. We propose that the edges of the islands contain excess Ag which becomes available to expand the holes, when the island perimeter decreases. Under certain conditions, excess Ag is also made available by dissolution of small islands that are Ag rich.

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“…[21][22][23] However, Zhang et al report that the IET structure can exist statically even at room temperature. 24,25 In the present work, we observe only the apparent HCT structure.…”

Section: Experimental and Computational Detailscontrasting

confidence: 49%

Islands and holes as measures of mass balance in growth of the(3×3)R30°phase of Ag on Si(111)

et al. 2010

View full text Add to dashboard Cite

show abstract

“…There are reports describing a reversible transition of IET to HCT at RT, due to thermal fluctuations. 53,63,67,79 Panel B shows a differentiated image of a high step density site after 10 ML of Ag has been deposited at RT.…”

Section: Ag On Ag-si(111)-(√3 X √3)r30mentioning

confidence: 99%

“…As shown in work by lass 6 , the surface phases of Au on Si often coe ist as one phase transitions to another. Over time particular attention was given to the (5 x 2) [65][66][67][68][69][70][71][72][73][74][75][76] and the -R ° 18, 2 , 58, 61, 6 , 65, 77-84 surface reconstructions. There is much similarity in the referenced work on the structure of these phases, but no single standard for either (5 x 2) or the -R ° structure has been established.…”

Section: General Introductionmentioning

confidence: 99%