Publications (12)
Enhancement of the electronic contribution to the low temperature specific heat of Fe/Cr magnetic multilayer
B. Revaz, M. -C. Cyrille, B. Zink +2
We measured the low temperature specific heat of a sputtered magnetic multilayer, as well as separate thick Fe and Cr films. Magnetoresistance…
Thermo-mechanical behavior of surface acoustic waves in ordered arrays of nanodisks studied by near infrared pump-probe diffraction experiments
C. Giannetti, B. Revaz, F. Banfi +10
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 temp…
Observation of d-wave scaling relations in the mixed-state specific heat of YBa2Cu3O7
B. Revaz, J. -Y. Genoud, A. Junod +2
The low temperature specific heat C(B,T) of an YBa2Cu3O7.00 single crystal is measured from 1.2 to 10 K in magnetic fields up to 14 T. The anisotropic component Caniso(T,B)=C(T,B//…
Pseudo-surface acoustic waves in hypersonic surface phononic crystals
D. Nardi, F. Banfi, C. Giannetti +3
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 period…
Tricritical Point and the Doping Dependence of the Order of the Ferromagnetic Phase Transition of La1-xCaxMnO3
D. Kim, B. Revaz, B. L. Zink +3
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 dat…
Observation of an unconventional metal-insulator transition in overdoped CuO_2 compounds
F. Venturini, M. Opel, T. P. Devereaux +7
The electron dynamics in the normal state of BiSrCaCuO is studied by inelastic light scattering over a wide range of doping. A strong anisotropy of the electro…
Transport Properties, Thermodynamic Properties, and Electronic Structure of SrRuO3
P. B. Allen, H. Berger, O. Chauvet +5
SrRuO is a metallic ferromagnet. Its electrical resistivity is reported for temperatures up to 1000K; its Hall coefficient for temperatures up to 300K; its specific heat for te…
Carrier relaxation, pseudogap, and superconducting gap in high-Tc cuprates: A Raman scattering study
M. Opel, R. Nemetschek, C. Hoffmann +9
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 sugge…
Doping dependence of the electronic Raman spectra in cuprates
F. Venturini, M. Opel, R. Hackl +3
We report electronic Raman scattering measurements on BiSr(YCa)CuO single crystals at different doping levels. The dependence of the spectra on dop…
Unusual dependence of vortex core states on the superconducting gap in BiSrCaCuO
B. W. Hoogenboom, K. Kadowaki, B. Revaz +3
We present a scanning tunneling spectroscopy study on quasiparticle states in vortex cores in BiSrCaCuO. The energy of the observed vortex core states shows an…
Shape and Motion of Vortex Cores in Bi_2Sr_2CaCu_2O_{8+δ}
B. W. Hoogenboom, M. Kugler, B. Revaz +3
We present a detailed study on the behaviour of vortex cores in Bi_2Sr_2CaCu_2O_{8+δ} using scanning tunneling spectroscopy. The very irregular distribution and shape of the vorte…
Ab-initio calculation of all-optical time-resolved calorimetry of nanosized systems: Evidence of nanosecond-decoupling of electron and phonon temperatures
F. Banfi, F. Pressacco, B. Revaz +4
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 rep…