| Issue |
Europhys. Lett.
Volume 39, Number 2, July II 1997
|
|
|---|---|---|
| Page(s) | 201 - 206 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00335-x | |
| Published online | 01 September 2002 | |
Influence of d-wave order parameter fluctuations on spin fluctuations in underdoped high-Tc cuprates
Abteilung für Theoretische Festkörperphysik,
Universität Hamburg, Jungiusstr. 11, D-20355 Hamburg,
Germany
Received:
19
February
1997
Accepted:
6
June
1997
We consider the effect of fluctuations of the
superconducting 
-wave
gap above Tc for the 2D Hubbard model.
The order parameter fluctuations (OPFL)
lead to a decrease
of Tc and to a suppression of the dynamical spin
susceptibility below a crossover temperature 
which can be much larger than Tc. The
temperature increases while Tc decreases
with increasing strength of OPFL, or decreasing doping.
The resulting neutron scattering intensity and NMR
relaxation rates decrease below for
decreasing T. This agrees qualitatively with
the observed spin gap behavior in the underdoped
high-Tc cuprates.
PACS: 74.20.Mn – Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.) / 74.40.+k – Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.) / 74.72.-h – High-Tc compounds
© EDP Sciences, 1997
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.