Volume 78, Number 3, May 2007
Article Number 37005
Number of page(s) 5
Section Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
Published online 23 April 2007
EPL, 78 (2007) 37005
DOI: 10.1209/0295-5075/78/37005

Superconductivity in $\chem{TTF[Ni(dmit)_2]_2}$ films

J.-P. Savy1, D. de Caro1, L. Valade1, J.-P. Legros1, P. Auban-Senzier2, C. R. Pasquier2, J. Fraxedas3 and F. Senocq4

1  Laboratoire de Chimie de Coordination, UPR CNRS 8241 - 205 route de Narbonne, F-31077 Toulouse, France
2  Laboratoire de Physique des Solides, Université Paris-Sud, UMR CNRS 8502 - Orsay, F-91405, France
3  Institut de Ciència de Materials de Barcelona (ICMAB-CSIC) - Campus de la UAB, E-08193 Bellaterra, Spain
4  ENSIACET-CIRIMAT, UMR CNRS 5085 - 118 route de Narbonne, F-31077 Toulouse, France

received 27 February 2007; accepted in final form 26 March 2007; published May 2007
published online 23 April 2007

We report on the observation of a superconducting transition in a fiber-like film of the ${\rm TTF}[{\rm Ni}({\rm dmit})_{2}]_{2}$ phase electrodeposited on silicon substrates. Superconductivity is evidenced by a broad drop of the resistance below 0.8 K under the application of a hydrostatic pressure of 7.7 kbar. Zero resistance is not reached due to the contribution of inter-fiber resistance. Superconductivity is confirmed by the application of a magnetic field perpendicular to the plane of the film. The critical field determined on the film is in agreement with that obtained in bulk single crystals.

74.78.-w - Superconducting films and low-dimensional structures.
74.70.Kn - Organic superconductors.
73.50.-h - Electronic transport phenomena in thin films.

© Europhysics Letters Association 2007