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Lecture F. Dominguez-Adame


02 mei 2005 FWN-Building 5113.0202, Nijenborgh 4, 9747 AG, Groningen
Speaker:Prof. F. Dominguez-Adame
Affiliation:Departamento de Fisica de Materiales Universidad Complutense de Madrid
Title:Anomalous transport and optical properties of low dimensional systems with scale-free disorder
Date:Mon May 2, 2005
Location:FWN-Building 5113.0202
Host:J. Knoester
Telephone:+31 50 363 4369


Spatial correlations of disorder in low-dimensional condensed matter result in new and sometimes not well understood phenomena. Thus, the widely admitted one-parameter scaling theory cannot account for localization properties of quasi-particles in disorder-correlated systems. Even more exotic transport and optical properties arise, when disorder is long-range correlated without spatial characteristic length (scale-free disorder). In this talk, I will focus on the dynamics of an electron subjected to an applied electric field as well as on the linear optical response of Frenkel excitons in molecular systems with scale-free disorder. In particular, I will show that electrons can undergo Bloch oscillations between mobility edges and that the optical spectrum presents a new absorption line located inside the band. Both features are unique fingerprints of the scale-free disorder.
Laatst gewijzigd:22 oktober 2012 14:30