Issue
EPL
Volume 80, Number 1, October 2007
Article Number 17001
Number of page(s) 5
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI http://dx.doi.org/10.1209/0295-5075/80/17001
Published online 03 September 2007
EPL, 80 (2007) 17001
DOI: 10.1209/0295-5075/80/17001

Role of the cooling rate in the stability of the superconducting phase of (TMTSF)$_{2}$ClO$_4$

S. Haddad, I. Sfar, S. Charfi-Kaddour and R. Bennaceur

Laboratoire de Physique de la Matière Condensée, Département de Physique, Faculté des Sciences de Tunis Campus universitaire 1060 Tunis, Tunisia


received 1 June 2007; accepted in final form 6 August 2007; published October 2007
published online 3 September 2007

Abstract
The non-centrosymmetric ClO$_{4}$ anions of the organic superconductor (TMTSF)$_{2}$ClO$_{4}$ order below 24 K. The size of domains where the anions are ordered is substantially dependent on the cooling rate which is a key parameter for the stability of the low-temperature electronic ground states. We study the effect of the cooling rate on the SC phase within a self-consistent approach in the framework of the time-dependent Ginzburg-Landau theory taking into account the superconducting fluctuations. We derive the superconducting transition temperature which is found to decrease with increasing cooling rate in agreement with recent experimental data.

PACS
74.70.Kn - Organic superconductors.
74.20.De - Phenomenological theories (two-fluid, Ginzburg-Landau, etc.).
74.40.+k - Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.).

© Europhysics Letters Association 2007