Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Revaz, B."'
Publikováno v:
Phys. Rev. B 81, 155426 (2010)
The thermal dynamics induced by ultrashort laser pulses in nanoscale systems, i.e. all-optical time-resolved nanocalorimetry is theoretically investigated from 300 to 1.5 K. We report ab-initio calculations describing the temperature dependence of th
Externí odkaz:
http://arxiv.org/abs/0911.2994
Publikováno v:
D. Nardi, F. Banfi, C. Giannetti, B. Revaz, G. Ferrini, and F. Parmigiani, Phys. Rev. B 80, 104119 (2009)
We present a theoretical framework allowing to properly address the nature of surface-like eigenmodes in a hypersonic surface phononic crystal, a composite structure made of periodic metal stripes of nanometer size and periodicity of 1 micron, deposi
Externí odkaz:
http://arxiv.org/abs/0904.0366
Autor:
Giannetti, C., Revaz, B., Banfi, F., Montagnese, M., Ferrini, G., Cilento, F., Maccalli, S., Vavassori, P., Oliviero, G., Bontempi, E., Depero, L. E., Metlushko, V., Parmigiani, F.
The ultrafast thermal and mechanical dynamics of a two-dimensional lattice of metallic nano-disks has been studied by near infrared pump-probe diffraction measurements, over a temporal range spanning from 100 fs to several nanoseconds. The experiment
Externí odkaz:
http://arxiv.org/abs/cond-mat/0701666
We report the doping dependence of the order of the ferromagnetic metal to paramagnetic insulator phase transition in La1-xCaxMnO3. At x = 0.33, magnetization and specific heat data show a first order transition, with an entropy change (2.3 J/molK) a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210088
Autor:
Venturini, F., Opel, M., Devereaux, T. P., Freericks, J. K., Tüttő, I., Revaz, B., Walker, E., Berger, H., Forró, L., Hackl, R.
Publikováno v:
Phys. Rev. Lett. 89, 107003 (2002)
The electron dynamics in the normal state of Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$ is studied by inelastic light scattering over a wide range of doping. A strong anisotropy of the electron relaxation is found which cannot be explained by single-particle
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206210
Publikováno v:
J. Phys. Chem. Sol. 63, 2345 (2002)
We report electronic Raman scattering measurements on Bi$_2$Sr$_2$(Y$_{1-x}$Ca$_x$)Cu$_2$O$_{8+\delta}$ single crystals at different doping levels. The dependence of the spectra on doping and on incoming photon energy is analyzed for different polari
Externí odkaz:
http://arxiv.org/abs/cond-mat/0110439
We measured the low temperature specific heat of a sputtered $(Fe_{23\AA}/Cr_{12\AA})_{33}$ magnetic multilayer, as well as separate $1000\AA$ thick Fe and Cr films. Magnetoresistance and magnetization measurements on the multilayer demonstrated anti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109097
We present a scanning tunneling spectroscopy study on quasiparticle states in vortex cores in Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$. The energy of the observed vortex core states shows an approximately linear scaling with the superconducting gap in the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105528
We present a detailed study on the behaviour of vortex cores in Bi_2Sr_2CaCu_2O_{8+\delta} using scanning tunneling spectroscopy. The very irregular distribution and shape of the vortex cores imply a strong pinning of the vortices by defects and inho
Externí odkaz:
http://arxiv.org/abs/cond-mat/0002146
Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study
Autor:
Opel, M., Nemetschek, R., Hoffmann, C., Philipp, R., Müller, P. F., Hackl, R., Tüttö, I., Erb, A., Revaz, B., Walker, E., Berger, H., Forró, L.
Publikováno v:
Phys. Rev. B 61, 9752 (2000)
We describe results of electronic Raman-scattering experiments in differently doped single crystals of Y-123 and Bi-2212. The comparison of AF insulating and metallic samples suggests that at least the low-energy part of the spectra originates predom
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908272