| Issue |
Europhys. Lett.
Volume 54, Number 3, May 2001
|
|
|---|---|---|
| Page(s) | 380 - 386 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2001-00253-5 | |
| Published online | 01 December 2003 | |
Magnetic resonance at 
and charge dynamics
in 
1
Institut für Theoretische Physik, Technische Universität
Graz A-8010 Graz, Austria
2
Department of Physics and Astronomy, McMaster University
Hamilton, Ont. L8S 4M1, Canada
3
Department of Physics, University of California, San Diego
La Jolla, CA 92093-0319, USA
Received:
9
October
2000
Accepted:
22
February
2001
We report an Eliashberg analysis of the electron dynamics in
. The magnetic resonance at 41 meV
couples to charge carriers and defines the characteristic
shape in energy of the scattering rate 
,
which allows us to construct the charge-spin spectral density
at temperature T. The T-dependence
of the weight under the resonance peak in 
agrees
with experiment as does that
of the London penetration depth and of the microwave conductivity.
Also, the T=0 condensation energy,
the fractional oscillator strength in the condensate, and the ratio of
gap-to-critical temperature agree well with the data.
PACS: 74.20.Mn – Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.) / 74.25.Gz – Optical properties / 74.72.-h – High-Tc compounds
© EDP Sciences, 2001
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