P. Monod
École Normale Supérieure
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Publication
Featured researches published by P. Monod.
Journal of Applied Physics | 2005
Silvana Mercone; Raymond Frésard; V. Caignaert; Christine Martin; Damien Saurel; Charles Simon; G. André; P. Monod; François Fauth
We study the influence of the Joule effect on the nonlinear behavior of the transport I-V curves in polycrystalline samples of the manganite Pr0.8Ca0.2MnO3 by using the crystalline unit-cell parameters as an internal thermometer in x-ray and neutron diffractions. We develop a simple analytical model to estimate the temperature profile in the samples. Under the actual experimental conditions we show that the internal temperature gradient or the difference between the temperature of the sample and that of the thermal bath is at the origin of the nonlinearity observed in the I-V curves. Consequences on other compounds with colossal magnetoresistance are also discussed.
Physical Review B | 2007
M. Golosovsky; P. Monod; P. K. Muduli; R. C. Budhani
We studied magnetic-field-dependent microwave absorption in epitaxial La 0.7 Sr 0.3 MnO 3 films using an 9.5 GHz Bruker electron-spin-resonance spectrometer. By analyzing the angular and temperature dependence of the ferromagnetic and spin-wave resonances we determine spin-wave stiffness and perpendicular anisotropy field. The spin-wave stiffness as found from the spectrum of the standing spin-wave resonances in thin films is in fair agreement with the results of inelastic neutron scattering studies on a single crystal of the same composition.
Physical Review B | 2007
M. Golosovsky; P. Monod; P. K. Muduli; R. C. Budhani; L. Mechin; P. Perna
We study magnetic-field-dependent nonresonant microwave absorption and dispersion in thin La 0.7 Sr 0.3 MnO 3 films and show that it originates from colossal magnetoresistance. We develop a model for the magnetoresistance of a thin ferromagnetic film in an oblique magnetic field. The model accounts fairly well for our experimental findings, as well as for the results of other researchers. We demonstrate that nonresonant microwave absorption is a powerful technique that allows contactless measurement of magnetic properties of thin films, including magnetoresistance, anisotropy field, and coercive field.
Physical Review B | 2012
M. Golosovsky; P. Monod; P. K. Muduli; R. C. Budhani
Westudiedmagnetic-field-inducedmicrowaveabsorptionin100‐200nmthickLa0.7Sr0.3MnO3 filmsonSrTiO3 substrate and found a low-field absorption with a very peculiar angular dependence: it appears only in the oblique field and is absent both in the parallel and in the perpendicular orientations. We demonstrate that this low-field absorption results from the ferromagnetic resonance in the multidomain state (domain-mode resonance). Its unusual angular dependence arises from the interplay between the parallel component of the magnetic field that drives the film into multidomain state and the perpendicular field component that controls the domain width through its effect on domain-wall energy. The low-field microwave absorption in the multidomain state can be a tool to probe domain structure in magnetic films with in-plane magnetization.
Journal of Applied Physics | 2005
M. Golosovsky; M. Abu-Teir; D. Davidov; O. Arnache; P. Monod; N. Bontemps; R. C. Budhani
We report phase-sensitive microwave studies of thin epitaxial manganite La1−xSrxMnO3 films on SrTiO3 substrate. The measurements were performed in the temperature range of 80–330K using a contactless microwave scanning probe operating at 26GHz with the aim of comparing dc resistivity and microwave resistivity. We find that the dc and the microwave resistivity of the La0.8Sr0.2MnO3 are almost the same, while for the La0.7Sr0.3MnO3 they are different above 200K. Our analysis of different mechanisms of this discrepancy, together with our measurement of the ferromagnetic resonance on the same samples, yields the film inhomogeneity on the microscopic scale as the most probable explanation.
Physical Review B | 2000
A. Sacuto; J. Cayssol; P. Monod; D. Colson
Physical Review B | 1992
D. Davidov; P. Monod; N. Bontemps
Physical Review B | 2009
A. Trokiner; S. V. Verkhovskii; A. Yakubovskii; A. Gerashenko; P. Monod; K. Kumagai; K. N. Mikhalev; A. L. Buzlukov; Z. Litvinova; O. Gorbenko; A. R. Kaul; M. Kartavtzeva
Physical Review B | 2012
Carl-Willem Rischau; Brigitte Leridon; D. Colson; A. Forget; P. Monod
Comptes Rendus De L Academie Des Sciences Serie Ii Fascicule C-chimie | 2001
Sébastien Marchand; Arlette Trokiner; Andrey Yakubovskii; P. Monod; A. Knizhnik; Y. Eckstein