Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Cochec, J. Le"'
Publikováno v:
Phys. Rev. Lett. 90, 205501 (2003)
The 1kHz real part $\chi'$ of the dielectric constant of a structural glass was measured at low temperature $T$ down to 14 mK. Reducing the sample thickness $h$ to 10 nm suppresses the usual minimum of $\chi'$ for measuring fields $E<.5 $ MV/m. This
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210024
Autor:
Cochec, J. Le, Ladieu, F.
Publikováno v:
Eur. Phys. J. B 32, 13-26 (2003)
We have calculated the real part $\chi'$ of the nonlinear dielectric susceptibility of amorphous insulators in the kHz range, by using the two-level system model and a nonperturbative numerical quantum approach. At low temperature $T$, it is first sh
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206230
Publikováno v:
Phys. Rev. B 66, 064203 (2002)
The magnetic field dependence of the low frequency dielectric constant $e_r$(H) of a structural glass a - SiO2 + xCyHz was studied from 400 mK to 50 mK and for H up to 3T. Measurement of both the real and the imaginary parts of $e_r$ is used to elimi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0203564
Autor:
Lamura, G., Villegier, J. C., Gauzzi, A., Cochec, J. Le, Laval, J. Y., Placais, B., Hadacek, N., Bok, J.
Using a single coil mutual inductance technique, we measure the low temperature dependence of the magnetic penetration depth in superconducting NbN films prepared with similar critical temperatures around 16 K but with different microstructures. Only
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201296
Autor:
Andreone, A., Ausanio, G., Di Gennaro, E., Lamura, G., Salluzzo, M., Cochec, J. Le, Gauzzi, A., Cantoni, C., Paranthaman, M., Giunchi, G., Ceresara, S.
We present a study of the electrodynamic response of MgB2 pellets and thin film samples exhibiting critical temperatures ranging between 26 and 38 K. We have performed accurate measurements of the surface impedance ZS =RS+iXS as a function of the tem
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110640
Autor:
Cochec, J. Le, Lamura, G., Gauzzi, A., Licci, F., Revcolevschi, A., Erb, A., Deutscher, G., Bok, J.
We report on measurements of the low temperature dependence of the magnetic penetration depth lambda_ab in several single crystals of La_2-xSr_xCuO_4, Bi_2Sr_2CaCu_2O_8 and YBa_2Cu_3O_6+x at various doping levels ranging from the under- to the overdo
Externí odkaz:
http://arxiv.org/abs/cond-mat/0001045
Autor:
Cochec, J. Le, Ladieu, F.
Publikováno v:
European Physical Journal B: Condensed Matter; Mar2003, Vol. 32 Issue 1, p13-26, 14p, 4 Graphs
Autor:
Lamura, G., Cochec, J. Le, Gauzzi, A., Villegier, J. C., Licci, F., Placais, B., Castro, D. Di, Bianconi, A., Bok, J.
Publikováno v:
Physica C: Superconductivity and its Applications; 2001, Vol. 364 Issue: 1 p235-238, 4p