TY  - JOUR
AU  - Weismann, A.
AU  - Wenderoth, M.
AU  - Lounis, S.
AU  - Zahn, P.
AU  - Quaas, N.
AU  - Ulbrich, R.G.
AU  - Dederichs, P. H.
AU  - Blügel, S.
TI  - Seeing the Fermi-surface in Real Space by Nanoscale Electron Focusing
JO  - Science
VL  - 323
SN  - 0036-8075
CY  - Washington, DC [u.a.]
PB  - American Association for the Advancement of Scienc
M1  - PreJuSER-3665
SP  - 1190 - 1193
PY  - 2009
N1  - 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.
AB  - 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.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
C6  - pmid:19251623
UR  - <Go to ISI:>//WOS:000263687600032
DO  - DOI:10.1126/science.1168738
UR  - https://juser.fz-juelich.de/record/3665
ER  -