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@ARTICLE{Luftner:201044,
author = {Luftner, D. and Ules, T. and Reinisch, E. M. and Koller, G.
and Subach, Sergey and Tautz, Frank Stefan and Ramsey, M. G.
and Puschnig, P.},
title = {{I}maging the wave functions of adsorbed molecules},
journal = {Proceedings of the National Academy of Sciences of the
United States of America},
volume = {111},
number = {2},
issn = {1091-6490},
address = {Washington, DC},
publisher = {National Acad. of Sciences},
reportid = {FZJ-2015-03354},
pages = {605 - 610},
year = {2014},
abstract = {The basis for a quantum-mechanical description of matter is
electron wave functions. For atoms and molecules, their
spatial distributions and phases are known as orbitals.
Although orbitals are very powerful concepts, experimentally
only the electron densities and -energy levels are directly
observable. Regardless whether orbitals are observed in real
space with scanning probe experiments, or in reciprocal
space by photoemission, the phase information of the orbital
is lost. Here, we show that the experimental momentum maps
of angle-resolved photoemission from molecular orbitals can
be transformed to real-space orbitals via an iterative
procedure which also retrieves the lost phase information.
This is demonstrated with images obtained of a number of
orbitals of the molecules pentacene (C22H14) and
perylene-3,4,9,10-tetracarboxylic dianhydride (C24H8O6),
adsorbed on silver, which are in excellent agreement with ab
initio calculations. The procedure requires no a priori
knowledge of the orbitals and is shown to be simple and
robust.},
cin = {PGI-3 / JARA-FIT},
ddc = {000},
cid = {I:(DE-Juel1)PGI-3-20110106 / $I:(DE-82)080009_20140620$},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000329614500023},
pubmed = {pmid:24344291},
doi = {10.1073/pnas.1315716110},
url = {https://juser.fz-juelich.de/record/201044},
}