Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fingerprint of fractional charge transfer at metal/organic interface   Although physisorption is a widely occurring mechanism of bonding at the
organic/metal interface, contradictory interpretations of this phenomenon are
often reported. Photoemission and X-ray absorption spectroscopy investigations
of nanorods of a substituted pentacene, 2,3,9,10-tetrafluoropentacene,
deposited on gold single crystals reveal to be fundamental to identify the
bonding mechanisms. We find fingerprints of a fractional charge transfer from
the clean metal substrate to the physisorbed molecules. This phenomenon is
unambiguously recognizable by a non-rigid shift of the core-level main lines
while the occupied states at the interface stay mostly unperturbed, and the
unoccupied states experience pronounced changes. The experimental results are
corroborated by first-principles calculations.

0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
24
The categories of this paper are: dg-ga
23
The categories of this paper are: solv-int
12
The categories of this paper are: nucl-th
34
The categories of this paper are: chem-ph
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex