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

O. Gurlu; Henricus J.W. Zandvliet; Bene Poelsema

doi:10.1103/PhysRevLett.93.066101

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

O. Gurlu, Henricus J.W. Zandvliet, Bene Poelsema

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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

Original language	Undefined
Pages (from-to)	066101-
Number of pages	4
Journal	Physical review letters
Volume	93
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevLett.93.066101
Publication status	Published - 2004

Keywords

METIS-220686
IR-48896

Access to Document

10.1103/PhysRevLett.93.066101

electronic_properties

Cite this

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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",

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AU - Gurlu, O.

AU - Zandvliet, Henricus J.W.

AU - Poelsema, Bene

PY - 2004

Y1 - 2004

N2 - 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

AB - 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

KW - METIS-220686

KW - IR-48896

U2 - 10.1103/PhysRevLett.93.066101

DO - 10.1103/PhysRevLett.93.066101

M3 - Article

VL - 93

SP - 066101-

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

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