Influence of Film and Substrate Structure on Photoelectron Momentum Maps of Coronene Thin Films on Ag(111) | Zendy

Christian Udhardt | Zendy; Félix Otto | Zendy; Christian S. Kern | Zendy; Daniel Lüftner | Zendy; Tobias Huempfner | Zendy; Tino Kirchhuebel | Zendy; Falko Sojka | Zendy; Matthias Meißner | Zendy; Bernd Schröter | Zendy; Roman Forker | Zendy; Peter Puschnig | Zendy; Torsten Fritz | Zendy

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Influence of Film and Substrate Structure on Photoelectron Momentum Maps of Coronene Thin Films on Ag(111)

Author(s) -

Christian Udhardt,

Félix Otto,

Christian S. Kern,

Daniel Lüftner,

Tobias Huempfner,

Tino Kirchhuebel,

Falko Sojka,

Matthias Meißner,

Bernd Schröter,

Roman Forker,

Peter Puschnig,

Torsten Fritz

Publication year - 2017

Publication title -

the journal of physical chemistry c

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.401

H-Index - 289

eISSN - 1932-7455

pISSN - 1932-7447

DOI - 10.1021/acs.jpcc.7b03500

Subject(s) - coronene , monolayer , ultraviolet photoelectron spectroscopy , x ray photoelectron spectroscopy , substrate (aquarium) , angle resolved photoemission spectroscopy , molecule , thin film , substructure , photoemission spectroscopy , chemistry , crystallography , materials science , chemical physics , electronic structure , computational chemistry , nanotechnology , physics , organic chemistry , nuclear magnetic resonance , oceanography , geology , engineering , structural engineering

Angle-resolved ultraviolet photoelectron spectroscopy (ARUPS) was measured for one-monolayer coronene films deposited on Ag(111). The ( k x , k y )-dependent photoelectron momentum maps (PMMs), which were extracted from the ARUPS data by cuts at fixed binding energies, show finely structured patterns for the highest and the second-highest occupied molecular orbitals. While the substructure of the PMM main features is related to the 4 × 4 commensurate film structure, various features with three-fold symmetry imply an additional influence of the substrate. PMM simulations on the basis of both free-standing coronene assemblies and coronene monolayers on the Ag(111) substrate confirm a sizable molecule-molecule interaction because no substructure was observed for PMM simulations using free coronene molecules.

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