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High magnetic field transport measurements of charge-ordered Pr0.5Ca0.5MnO3 strained thin films

MPG-Autoren
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de Brion,  S.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Chouteau,  G.
High Magnetic Field Laboratory, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Zitation

Prellier, W., Buzin, E. R., Simon, C., Mercey, B., Hervieu, M., de Brion, S., et al. (2002). High magnetic field transport measurements of charge-ordered Pr0.5Ca0.5MnO3 strained thin films. Physical Review B, 66(2): 024432.


Zitierlink: https://hdl.handle.net/21.11116/0000-000E-E91F-A
Zusammenfassung
We have investigated the magnetic-field-induced phase
transition of charge-ordered (CO) Pr0.5Ca0.5MnO3 thin films,
deposited onto (100)-oriented LaAlO3 and (100)-oriented SrTiO3
substrates using the pulsed laser deposition technique, by
measuring the transport properties with magnetic fields up to
22 T. The transition to a metallic state is observed on both
substrates by application of a critical magnetic field (H-C>10
T at 60 K). The value of the field required to destroy the
charge-ordered insulating state, lower than the bulk compound,
depends on both the substrate and the thickness of the film.
The difference of the critical magnetic field between the films
and the bulk material is explained by the difference of in-
plane parameters at low temperature (below the CO transition).
Finally, these results confirm that the robustness of the CO
state, depends mainly on the stress induced by the difference
in the thermal dilatations between the film and the substrate.