English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Exciton dispersion in molecular solids

Cudazzo, P., Sottile, F., Rubio, A., & Gatti, M. (2015). Exciton dispersion in molecular solids. Journal of Physics: Condensed Matter, 27(11): 113204. doi:10.1088/0953-8984/27/11/113204.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-A13A-8 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-27FC-2
Genre: Journal Article

Files

show Files

Locators

show
hide
Description:
-

Creators

show
hide
 Creators:
Cudazzo, Pierluigi1, 2, Author
Sottile, Francesco2, 3, Author
Rubio, Angel1, 2, 4, Author              
Gatti, Matteo2, 3, 5, Author
Affiliations:
1Nano-Bio Spectroscopy group, Universidad del País Vasco, CFM CSIC-UPV/EHU-MPC and DIPC, E-20018 San Sebastián, Spain, ou_persistent22              
2European Theoretical Spectroscopy Facility (ETSF), ou_persistent22              
3Laboratoire des Solides Irradiés, École Polytechnique, CNRS-CEA/DSM, F-91128 Palaiseau, France, ou_persistent22              
4Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_2074320              
5Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette, France, ou_persistent22              

Content

show
hide
Free keywords: Electron-hole drops and electron-hole plasma; Exchange, correlation, dielectric and magnetic response functions, plasmons; Condensed matter: electrical, magnetic and optical
 Abstract: The investigation of the exciton dispersion (i.e. the exciton energy dependence as a function of the momentum carried by the electron–hole pair) is a powerful approach to identify the exciton character, ranging from the strongly localised Frenkel to the delocalised Wannier–Mott limiting cases. We illustrate this possibility at the example of four prototypical molecular solids (picene, pentacene, tetracene and coronene) on the basis of the parameter-free solution of the many-body Bethe–Salpeter equation. We discuss the mixing between Frenkel and charge-transfer excitons and the origin of their Davydov splitting in the framework of many-body perturbation theory and establish a link with model approaches based on molecular states. Finally, we show how the interplay between the electronic band dispersion and the exchange electron–hole interaction plays a fundamental role in setting the nature of the exciton. This analysis has a general validity holding also for other systems in which the electron wavefunctions are strongly localized, as in strongly correlated insulators.

Details

show
hide
Language(s): eng - English
 Dates: 2015-01-122014-09-302015-01-202015-03-042015-03-25
 Publication Status: Published in print
 Pages: 21
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1088/0953-8984/27/11/113204
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Journal of Physics: Condensed Matter
  Abbreviation : J. Phys.: Condens. Matter
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Bristol, UK : IOP Publishing
Pages: - Volume / Issue: 27 (11) Sequence Number: 113204 Start / End Page: - Identifier: ISSN: 0953-8984
CoNE: /journals/resource/954928562478