Zobrazeno 1 - 10
of 291
pro vyhledávání: '"L'Hôte D"'
We present a detailed study of the heating effects in dielectric measurements carried out on a liquid. Such effects come from the dissipation of the electric power in the liquid and give a contribution to the nonlinear third harmonics susceptibility
Externí odkaz:
http://arxiv.org/abs/1010.5672
Autor:
Komatsu, Katsuyoshi, L'Hote, D., Nakamae, Sawako, Mosser, Vincent, Konczykowski, Marcin, Dubois, Emmanuelle, Dupuis, V., Perzynski, Régine
We present the experimental observation of the fluctuation-dissipation theorem (FDT) violation in an assembly of interacting magnetic nanoparticles in the low temperature superspin glass phase. The magnetic noise is measured with a two-dimension elec
Externí odkaz:
http://arxiv.org/abs/1010.4012
Evidence of growing spatial correlations at the glass transition from nonlinear response experiments
The ac nonlinear dielectric response $\chi_3(\omega,T)$ of glycerol was measured close to its glass transition temperature $T_g$ to investigate the prediction that supercooled liquids respond in an increasingly non-linear way as the dynamics slows do
Externí odkaz:
http://arxiv.org/abs/1002.0498
Autor:
Komatsu, K., L'Hote, D., Nakamae, S., Ladieu, F., Mosser, V., Kerlain, A., Konczykowski, M., Dubois, E., Dupuis, V., Perzynski, R.
Publikováno v:
AIP Conf. Proc., 1129, 153-156 (2009)
We present our first experimental determination of the magnetic noise of a superspinglass made of < 1 pico-liter frozen ferrofluid. The measurements were performed with a local magnetic field sensor based on Hall microprobes operated with the spinnin
Externí odkaz:
http://arxiv.org/abs/1001.1637
Publikováno v:
Rev. Sci. Instrum. 79, 103905 (2008)
We present a high sensitivity method allowing the measurement of the non linear dielectric susceptibility of an insulating material at finite frequency. It has been developped for the study of dynamic heterogeneities in supercooled liquids using diel
Externí odkaz:
http://arxiv.org/abs/0911.3053
Autor:
Bert, F., Nakamae, S., Ladieu, F., L'Hôte, D., Bonville, P., Duc, F., Trombe, J. -C., Mendels, P.
The dc-magnetization of the unique S=1/2 kagome antiferromagnet Herbertsmithite has been measured down to 0.1K. No sign of spin freezing is observed in agreement with former muSR and ac-susceptibility results. The low temperature magnetic response is
Externí odkaz:
http://arxiv.org/abs/0710.0451
We have measured the resistance and the 1/f resistance noise of a two-dimensional low density hole system in a high mobility GaAs quantum well at low temperature. At densities lower than the metal-insulator transition one, the temperature dependence
Externí odkaz:
http://arxiv.org/abs/cond-mat/0511375
Publikováno v:
AIP Conference Proceedings 780, 139-142 (2005)
Two-dimensional electron or hole systems in semiconductors offer the unique opportunity to investigate the physics of strongly interacting fermions. We have measured the 1/f resistance noise of two-dimensional hole systems in high mobility GaAs quant
Externí odkaz:
http://arxiv.org/abs/cond-mat/0510142
The 1/f resistance noise of a two-dimensional (2D) hole system in a high mobility GaAs quantum well has been measured on both sides of the 2D metal-insulator transition (MIT) at zero magnetic field (B=0), and deep in the insulating regime. The two me
Externí odkaz:
http://arxiv.org/abs/cond-mat/0412084
We have measured the resistance noise of a two-dimensional (2D)hole system in a high mobility GaAs quantum well, around the 2D metal-insulator transition (MIT) at zero magnetic field. The normalized noise power $S_R/R^2$ increases strongly when the h
Externí odkaz:
http://arxiv.org/abs/cond-mat/0301222