Induced phase cloning in generalized BCS systems

Autor(en)

Nevena Ilieva, Walter Thirring

Abstrakt

We discuss a possible mechanism for high-temperature superconductivity, inspired by typically field-theoretical arguments. We consider a BCS-based model in the quasi-spin formalism, with additional mean-field dictated self-interaction. We argue that the structure of the interaction provides a mechanism for control over directions of the spin (S) over right arrow other than S-z, which is being controlled via the conventional chemical potential. The phenomenon is possible in a KMS state, that is at non-zero temperature. We also find the conditions for the appearance of a high-T-c superconducting phase. The symmetry properties of the model (ODLRO, supersymmetric equivalence in certain limits, both positive and negative values of the mean-field coupling) are important in the context of the recent string-theory inspired considerations of superconductivity within the AdS/CFT duality approach.

Organisation(en)

Mathematische Physik

Externe Organisation(en)

Erwin Schrödinger Institut, Universität Wien

Journal

Fortschritte der Physik

Band

58

Seiten

373-382

Anzahl der Seiten

10

ISSN

0015-8208

DOI

https://doi.org/10.1002/prop.200900112

Publikationsdatum

2010

Peer-reviewed

Ja

ÖFOS 2012

103019 Mathematische Physik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/96f96846-d2c2-45b7-8453-6ded9d605a30