Electronic properties of (2x1) and c(4x2) domains on Ge(001) studied by scanning tunneling spectroscopy

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Gurlu, Oguzhan and Zandvliet, Harold J.W. and Poelsema, Bene (2004) Electronic properties of (2x1) and c(4x2) domains on Ge(001) studied by scanning tunneling spectroscopy. Physical Review Letters, 93 (6). 066101. ISSN 0031-9007

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Abstract:The surface electronic structure of Ge(001) was studied by scanning tunneling spectroscopy. The measured surface densities of states unequivocally reveal the presence of a metallic state on the (2×1) domains, which is absent on the c(4×2) domains. This metallic state, so far observed only in integral measurements, is attributed to the flip-flopping dimers that constitute the (2×1) domains. Our data also reveal a set of previously unresolved surface states, in perfect agreement with published theoretical predictions
Item Type:Article
Copyright:© 2004 The American Physical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/48896
Official URL:http://dx.doi.org/10.1103/PhysRevLett.93.066101
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Metis ID: 220686