-conjugated polymer films.
Synthetic Metals
Volume
141, Issues 1-2 ,
18 March 2004,
Pages 179-183
Michael
J. Rice Memorial Festschrift
Multiple Fano effect in charge density wave systems
B. Horovitz a,
R. Österbackab
and Z. V. Vardenyc
a Department of Physics and Ilze Katz center for
nanotechnology, Ben Gurion University of the Negev, Beer-Sheva 84105,
Israel
b Department of Physics, Åbo Akademi University,
Porthansgatan 3, FIN-20500, Turku, Finland
c Department of Physics, University of Utah, 114 South 1400
East, Salt Lake City, UT 84112-0830, USA
Received 8 August 2003; accepted 1 September 2003.
Available online 16 January 2004.
A general framework for analyzing the multiple Fano
effect (MFE) in charge density wave (CDW) systems is developed. The MFE
occurs when IR active modes have frequencies above the CDW gap and
interference between the IR modes and the electronic continuum leads to
a series of resonances and anti-resonances. We parameterize the peaks
and dips of the absorption by a set of bare frequencies, a pinning
parameter and one interaction parameter. We apply this method to
recently observed photoinduced absorption spectra of -conjugated polymer films.