Electron-Vibration Coupling in Molecular Materials: Assignment of Vibronic Modes from Photoelectron Momentum Mapping

Electron-phonon coupling is one of the most fundamental effects in condensed matter physics. We here demonstrate that photoelectron momentum mapping can reveal and visualize the coupling between specific vibrational modes and electronic excitations. When imaging molecular orbitals with high energy r...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2016-04, Vol.116 (14), p.147601-147601, Article 147601
Main Authors: Graus, M, Grimm, M, Metzger, C, Dauth, M, Tusche, C, Kirschner, J, Kümmel, S, Schöll, A, Reinert, F
Format: Article
Language:English
Subjects:
Coupling (molecular)
Distortion
Electronics
Excitation
Information dissemination
Mapping
Photoelectrons
Simulation
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electron-phonon coupling is one of the most fundamental effects in condensed matter physics. We here demonstrate that photoelectron momentum mapping can reveal and visualize the coupling between specific vibrational modes and electronic excitations. When imaging molecular orbitals with high energy resolution, the intensity patterns of photoelectrons of the vibronic sidebands of molecular states show characteristic changes due to the distortion of the molecular frame in the vibronically excited state. By comparison to simulations, an assignment of specific vibronic modes is possible, thus providing unique information on the coupling between electronic and vibronic excitation.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.116.147601