| Issue |
Europhys. Lett.
Volume 52, Number 3, November I 2000
|
|
|---|---|---|
| Page(s) | 351 - 357 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2000-00446-x | |
| Published online | 01 September 2002 | |
Anisotropic superconductivity driven by kinematic interaction
Laboratorium voor Vaste-Stoffysica en Magnetisme,
Katholieke Universiteit Leuven
Celestijnenlaan 200D, B-3001 Leuven, Belgium
Received:
2
May
2000
Accepted:
12
September
2000
We have analysed the effect of kinematic pairing on the symmetry of
superconducting order parameter for a square lattice in the frame of the
strongly correlated Hubbard model. It is argued that in the first
perturbation order the kinematic interaction renormalizes the Hubbard-I
dispersions and provides at low doping the mixed singlet 
-wave
superconductivity, giving way at higher doping to the triplet p-wave
superconductivity. The obtained phase diagram depends only on the hopping
integral parameter. The influence of the Coulomb repulsion on the kinematic
superconducting pairing has been estimated. The -wave gap and
the thermodynamic critical magnetic field have been derived.
PACS: 74.25.Dw – Superconductivity phase diagrams / 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 74.20.Mn – Nonconventional mechanisms (spin fluctuations, polarons and bipolarons, resonating valence bond model, anyon mechanism, marginal Fermi liquid, Luttinger liquid, etc.)
© EDP Sciences, 2000
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.