| Issue |
EPL
Volume 77, Number 2, January 2007
|
|
|---|---|---|
| Article Number | 27002 | |
| Number of page(s) | 4 | |
| Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
| DOI | https://doi.org/10.1209/0295-5075/77/27002 | |
| Published online | 05 January 2007 | |
Mixed order parameter symmetries in cuprate superconductors
1
Max-Planck-Institut für Festkörperforschung - Heisenbergstrasse 1, D-70569 Stuttgart, Germany
2
Physik Institut der Universität Zürich - Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
3
Physics Institute of Tbilisi State University - Chavchadze 3, GE-0128 Tbilisi, Georgia
Received:
17
August
2006
Accepted:
16
November
2006
The recent observation of an inflection point in the temperature dependence of the in-plane magnetic field dependence 
is investigated within a two-band model with coupled order parameters of different symmetries. While the dominant order parameter has d-wave symmetry, the smaller one is of s-wave symmetry. Superconductivity is robust in the d-wave channel and induced via interband interactions in the s-wave subsystem.
PACS: 74.20.-z – Theories and models of superconducting state / 74.72.-h – Cuprate superconductors (high-Tc and insulating parent compounds) / 74.20.Rp – Pairing symmetries (other than s-wave)
© Europhysics Letters Association, 2007
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