mriselMagnetic Resonance in SolidsMagnetic Resonance in Solids2072-5981Kazan Federal Universitymrisel-139Research ArticleСтатьиResonance dc phenomena in manganite thin filmsAtsarkinV. A.

125009 Moscow

atsarkin@cplire.ruDemidovV. V.

125009 Moscow

SorokinB. V.

125009 Moscow

V.A. Kotel'nikov Institute of Radio Engineering and Electronics of RASRussian Federation201419042014162SPECIAL ISSUE dedicated to Boris I. Kochelaev's 80th birthday14201 (9 pp.)Copyright © Atsarkin V.A., Demidov V.V., Sorokin B.V., 20242024Atsarkin V.A., Demidov V.V., Sorokin B.V.Atsarkin V.A., Demidov V.V., Sorokin B.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.mrsej.ru/jour/article/view/139

The resonance spin rectification (RSR) and resonance magnetoresistance (RMR) have been studied on La2/3Sr1/3MnO3 epitaxial thin films in the temperature range of 300-365 K, including the Curie point (TC). The RSR effect is found to be caused by anisotropic magnetoresistance under conditions of the magnetic-resonance microwave pumping; it decreases upon heating and disappears at TC. Unlike that, the RMR is maximal at TC and shows clear correlation with the colossal magnetoresistance (CMR) of the material under study. The interpretation implies decreasing of the sample magnetization due to resonance saturation, thus leading to an increase in electric resistivity in terms of the CMR mechanism. Quantitative agreement is demonstrated between the experimental RMR data and theory accounting for Bloch-type relaxation in the vicinity of the phase transition.

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The authors declare that there are no conflicts of interest present.