Volume 80, Number 1, October 2007
Article Number 17001
Number of page(s) 5
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
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

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.

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