Journal Article

PreJuSER-3665

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Seeing the Fermi-surface in Real Space by Nanoscale Electron Focusing

Weismann, A. ; Wenderoth, M. ; Lounis, S.FZJ* ; Zahn, P. ; Quaas, N. ; Ulbrich, R. G. ; Dederichs, P. H.FZJ* ; Blügel, S.FZJ*

2009
American Association for the Advancement of Scienc Washington, DC [u.a.]

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Please use a persistent id in citations: doi:10.1126/science.1168738

Abstract: The Fermi surface that characterizes the electronic band structure of crystalline solids can be difficult to image experimentally in a way that reveals local variations. We show that Fermi surfaces can be imaged in real space with a low-temperature scanning tunneling microscope when subsurface point scatterers are present: in this case, cobalt impurities under a copper surface. Even the very simple Fermi surface of copper causes strongly anisotropic propagation characteristics of bulk electrons that are confined in beamlike paths on the nanoscale. The induced charge density oscillations on the nearby surface can be used for mapping buried defects and interfaces and some of their properties.

Keyword(s): J

Note: This work was supported by the European Science Foundation EUROCORES Programme Self-Organized NanoStructures under contract N. ERAS-CT-2003-980409, the Deutsche Forschungsgemeinschaft Priority Programme SPP1153, and the Deutsche Forschungsgemeinschaft Collaborative Research Centre SFB602.

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Quanten-Theorie der Materialien (IAS-1)
3. Theorie der Strukturbildung (IFF-3)
4. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
5. Jülich Aachen Research Alliance - High-Performance Computing (JARA-HPC)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2009

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Database coverage:
; JCR ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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