Anomalous ferromagnetic spin fluctuations in an antiferromagnetic insulator Pr_{1-x}Ca_{x}MnO_{3}

Abstract

The high temperature paramagnetic state in an antiferromagnetic (AFM) insulator Pr_{1-x}Ca_{x}MnO_{3} is characterized by the ferromagnetic (FM) spin fluctuations with an anomalously small energy scale. The FM fluctuations show a precipitous decrease of the intensity at the charge ordering temperature T_{CO}, but persist below T_{CO}, and vanish at the AFM transition temperature T_{N}. These results demonstrate the importance of the spin ordering for the complete switching of the FM fluctuation in doped manganites.

REVTeX, 5 pages, 4 figures, submitted to Phys. Rev. B

References in corpus (1)

• Evolution of the low-frequency spin dynamics in ferromagnetic manganites

Cited by in corpus (26)

• Colossal Magnetoresistant Materials: The Key Role of Phase Separation
• Hole concentration induced transformation of the magnetic and orbital structure in Nd{1-x}Sr{x}MnO{3}
• Coexisting charge modulation and ferromagnetism produces long period phases in manganites: new example of electronic soft matter
• Mesoscopic and Microscopic Phase Segregation in Manganese Perovskites
• Origin of Colossal Dielectric Response of Pr(0.6)Ca(0.4)MnO(3)
• X-ray Resonant Scattering Studies of Orbital and Charge Ordering in Pr${}_{1-x}$Ca${}_x$MnO${}_3$
• Non-linear conduction in charge-ordered Pr${}_{0.63}$ Ca${}_{0.37}$ MnO${}_3$ : Effect of magnetic fields
• Competition between ferromagnetic and charge-orbital ordered phases in Pr${}_{1-x}$Ca${}_x$MnO${}_3$ for $x$=1/4, 3/8, and 1/2
• Correlated Polarons in Dissimilar Perovskite Manganites
• Competition between stripe and checkerboard magnetic instabilities in Mn-doped BaFe2As2
• Chemical potential shift and spectral weight transfer in Pr${}_{1-x}$Ca${}_x$MnO${}_3$ revealed by photoemission spectroscopy
• Magnetic Field resulting from non-linear electrical transport in single crystals of charge-ordered Pr${}_{0.63}$ Ca${}_{0.37}$ MnO${}_3$}
• Anomalous spin susceptibility and magnetic polaron formation in the double exchange systems
• Commensurate-Incommensurate transition in the melting process of the orbital ordering in Pr0.5Ca0.5MnO3: neutron diffraction study
• Charge and Orbital Ordering in Pr_{0.5} Ca_{0.5} MnO_3 Studied by ^{17}O NMR
• Magneto-transport studies on (Pr1/3Sm2/3)2/3A1/3MnO3 (A = Ca, Sr and Ba) compounds
• Electronically smectic-like phase in a nearly half-doped manganite
• Coherent X-ray Scattering from Manganite Charge and Orbital Domains
• Collapse of the charge ordering state at high magnetic fields in the rare-earth manganite, Pr_{0.63}Ca_{0.37}MnO_3
• Temperature-dependent photoemission spectral weight transfer and chemical potential shift in Pr${}_{1-x}$Ca${}_x$MnO${}_3$ : Implications for charge density modulation
• The charge ordered state in half-doped Bi-based manganites studied by ${}^{17}$O and ${}^{209}$Bi NMR
• Signature of Magnetic Phase Separation in the Ground State of Pr1-xCaxMnO3
• Electronic self-organization in the single-layer manganite $\mathrm{P}{\mathrm{r}}_{1-x}\mathrm{C}{\mathrm{a}}_{1+x}\mathrm{Mn}{\mathrm{O}}_4$
• The phase-separated states in antiferromagnetic semiconductors with polarizable lattice
• Preserving orbital order in a layered manganite by ultrafast hybridized band excitation
• Evidence of mobile carriers with Charge Ordering gap in Epitaxial Pr${}_{0.625}$Ca${}_{0.375}$MnO${}_3$ Thin Films