title: Persistent photoinduced magnetization in the coexisting spin-glass and ferromagnetic phases of Pr₀.₉Ca₀.₁MnO₃ thin film.
abstract: The persistent photoinduced magnetization (PPM) in the low bandwidth material Pr(1-x)Ca(x)MnO₃ at the low hole doping level of x = 0.1 is reported. Upon zero-field cooling under photoexcitation, significant improvement of the ferromagnetic (FM) ordering was observed in the low temperature spin-glass phase. However, upon field cooling, the FM ordering was found to be suppressed due to weakening of the double-exchange interaction. High kinetic energy x-ray photoelectron spectroscopy measurements indicated a slight increase in the Mn³⁺ peak under photoexcitation which clarifies the weakening of the FM interaction. The fast relaxation of the PPM is discussed in view of localization of spin polarons in sites of magnetic disorders and the results are compared with previous reports of PPM in intermediate bandwidth Pr₀.₉Ca₀.₁MnO₃ samples.
authors: Wihuri Physical Laboratory, Department of Physics and Astronomy, University of Turku, FI-20014 Turku, Finland.
authors: S
authors: S
authors: Majumdar
authors: H
authors: H
authors: Huhtinen
authors: M
authors: M
authors: Svedberg
authors: P
authors: P
authors: Paturi
authors: S
authors: S
authors: Granroth
authors: K
authors: K
authors: Kooser