Breakdown of Far-Field Raman Selection Rules by Light-Plasmon Coupling Demonstrated by Tip-Enhanced Raman Scattering

Poliani E, Wagner MR, Vierck A, Herziger F, Nenstiel C, Gannott F, Schweiger M, Fritze S, Dadgar A, Zaumsei J, Krost A, Hoffmann A, Maultzsch J (2017)

Publication Type: Journal article

Publication year: 2017

Journal

Journal of Physical Chemistry Letters American Chemical Society

Book Volume: 8

Pages Range: 5462-5471

Journal Issue: 22

DOI: 10.1021/acs.jpclett.7b02505

Abstract

We present an experimental study on the near-field light-matter interaction by tip-enhanced Raman scattering (TERS) with polarized light in three different materials: germanium-doped gallium nitride (GaN), graphene, and carbon nanotubes. We investigate the dependence of the TERS signal on the incoming light polarization and on the sample carrier concentration, as well as the Raman selection rules in the near-field. We explain the experimental data with a tentative quantum mechanical interpretation, which takes into account the role of plasmon polaritons, and the associated evanescent field. The driving force for the breakdown of the classical Raman selection rules in TERS is caused by photon tunneling through the perturbation of the evanescent field, with the consequent polariton annihilation. Predictions based on this quantum mechanical approach are in good agreement with the experimental data, which are shown to be independent of incoming light polarization, leading to new Raman selection rules for TERS.

Authors with CRIS profile

Florentina Gannott Sonderforschungsbereich 953/3 Synthetische Kohlenstoffallotrope Manuel Schweiger Lehrstuhl für Werkstoffwissenschaften (Polymerwerkstoffe) (LSP) Janina Maultzsch

Involved external institutions

Technische Universität Berlin DE Germany (DE) Otto-von-Guericke-Universität Magdeburg DE Germany (DE) Ruprecht-Karls-Universität Heidelberg DE Germany (DE)

How to cite

APA:

Poliani, E., Wagner, M.R., Vierck, A., Herziger, F., Nenstiel, C., Gannott, F.,... Maultzsch, J. (2017). Breakdown of Far-Field Raman Selection Rules by Light-Plasmon Coupling Demonstrated by Tip-Enhanced Raman Scattering. Journal of Physical Chemistry Letters, 8(22), 5462-5471. https://doi.org/10.1021/acs.jpclett.7b02505

MLA:

Poliani, Emanuele, et al. "Breakdown of Far-Field Raman Selection Rules by Light-Plasmon Coupling Demonstrated by Tip-Enhanced Raman Scattering." Journal of Physical Chemistry Letters 8.22 (2017): 5462-5471.

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