New interface structure for A-type CoSi sub 2 /Si(111)

New interface structure for A-type CoSi sub 2 /Si(111)

A new model of a CoSi sub 2 /Si(111) interface structure has been generated using images produced by Z-contrast scanning transmission electron microscopy. The images indicate that the top and bottom interfaces between the type-A buried CoSi sub 2 layer and Si(111) both have eightfold coordinated Co...

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Veröffentlicht in:Applied physics letters 1994-05, Vol.64 (18), p.2409-2411
Hauptverfasser: Chisholm, M F, Pennycook, S J, Jebasinski, R, Mantl, S
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Sprache:eng
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container_end_page 2411
container_issue 18
container_start_page 2409
container_title Applied physics letters
container_volume 64
creator Chisholm, M F
Pennycook, S J
Jebasinski, R
Mantl, S
description A new model of a CoSi sub 2 /Si(111) interface structure has been generated using images produced by Z-contrast scanning transmission electron microscopy. The images indicate that the top and bottom interfaces between the type-A buried CoSi sub 2 layer and Si(111) both have eightfold coordinated Co atoms. This is accomplished by converting the one interface structure from sevenfold to eightfold coordination by locating a twinned layer of Si at the interface. The preference for this interface over the sevenfold type-A structure is in agreement with theoretical predictions.
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title New interface structure for A-type CoSi sub 2 /Si(111)
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