New interface structure for A-type CoSi2/Si(111)
- 2 May 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (18), 2409-2411
- https://doi.org/10.1063/1.111583
Abstract
A new model of a CoSi2/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 CoSi2 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.Keywords
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