Transient quantum isolation and critical behavior in the magnetization dynamics of half-metallic manganites

@article{Pincelli2019TransientQI,
  title={Transient quantum isolation and critical behavior in the magnetization dynamics of half-metallic manganites},
  author={Tommaso Pincelli and Riccardo Cucini and Adriano Verna and Francesco Borgatti and M. Oura and K. Tamasaku and H. Osawa and T.-L. Lee and Christoph Schlueter and Sebastian G{\"u}nther and Christian H. Back and Martina Dell’Angela and R Ciprian and Pasquale Orgiani and A. Petrov and Fausto Sirotti and Valentin Alek Dediu and Ilaria Bergenti and Patrizio Graziosi and Fabio Miletto Granozio and Y. Tanaka and Munetaka Taguchi and Hiroshi Daimon and Jun Fujii and Giovannibattista Rossi and Giancarlo Panaccione},
  journal={Physical Review B},
  year={2019}
}
We combine time resolved pump-probe Magneto-Optical Kerr Effect and Photoelectron Spectroscopy experiments supported by theoretical analysis to determine the relaxation dynamics of delocalized electrons in half-metallic ferromagnetic manganite $La_{1-x}Sr_{x}MnO_{3}$. We observe that the half-metallic character of $La_{1-x}Sr_{x}MnO_{3}$ determines the timescale of both the electronic phase transition and the quenching of magnetization, revealing a quantum isolation of the spin system in double… Expand
An integrated ultra-high vacuum apparatus for growth and in situ characterization of complex materials.
TLDR
The MBE-Cluster operates for in-house research as well as user facility in combination with the APE beamlines at Sincrotrone-Trieste and the high harmonic generator facility for time-resolved spectroscopy. Expand
Hard x-ray photoelectron spectroscopy: a snapshot of the state-of-the-art in 2020
TLDR
The main motivation for and focus of this paper is to provide a picture of the technique in 2020, including a detailed overview of available experimental systems worldwide and insights into a range of specific measurement modi and approaches. Expand
Dimensionality Effects and Phase Transition Dynamics in Spintronics Materials as Seen by X-ray Electron Spectroscopies
Hole-doped rare-earth manganites, like. [...]
Magnetic property under the pressure and electrical transport behavior under the magnetic field for the perovskite manganite La0.7Ca0.3MnO3
Abstract With respect to the magnetic properties under the pressure for the ferromagnetic metallic system La1−xCaxMnO3(0.18 ≤x
Photoemission from the gas phase using soft x-ray fs pulses: an investigation of the space-charge effects
An experimental and computational investigation of the space-charge effects occurring in ultrafast photoelectron spectroscopy from the gas phase is presented. The target sample CF$_3$I is excited byExpand

References

SHOWING 1-10 OF 102 REFERENCES
Ultrafast spin dynamics and critical behavior in half-metallic ferromagnet: Sr2FeMoO6
TLDR
The optically detected magnetization dynamics clearly shows the crossover from microscopic photoinduced demagnetization to macroscopic critical behavior with universal power law divergence of relaxation time for a wide dynamical critical region. Expand
Temperature Dependence of Magnetically Active Charge Excitations in Magnetite across the Verwey Transition.
TLDR
The results indicate that the Verwey transition is driven by changes in the strongly correlated and magnetically active B-site electronic states, consistent with resistivity and optical spectra. Expand
Photoinduced spin dynamics in La 0.6 Sr 0.4 MnO 3 observed by time-resolved magneto-optical Kerr spectroscopy
Photoinduced effect in a ferromagnetic perovskite ${\mathrm{La}}_{0.6}{\mathrm{Sr}}_{0.4}{\mathrm{MnO}}_{3}$ was investigated by femtosecond pump-probe spectroscopy. By utilizing magneto-optical KerrExpand
Measurement of the magneto-optical response of Fe and CrO 2 epitaxial films by pump-probe spectroscopy: Evidence for spin-charge separation
We have investigated the magneto-optical response of Fe and CrO${}_{2}$ epitaxial films by pump-probe polarimetry, showing that charge and spin dynamics can be unambiguously disentangled. TheExpand
Unconventional slowing down of electronic recovery in photoexcited charge-ordered La1/3Sr2/3FeO3
TLDR
The combined experimental and theoretical investigation shows that the slowing down of electronic recovery corresponds to the pseudo-critical dynamics that originates from magnetic interactions close to a weakly first-order phase transition. Expand
General features of photoinduced spin dynamics in ferromagnetic and ferrimagnetic compounds
Ultrafast photoinduced spin dynamics has been investigated by time-resolved magneto-optical Kerr spectroscopy for various ferromagnetic and ferrimagnetic compounds: FeCr2S4, CoCr2S4, CuCr2Se4,Expand
Critical behavior within 20 fs drives the out-of-equilibrium laser-induced magnetic phase transition in nickel
TLDR
High-harmonic spectroscopies reveal that fast energy transfer within 20 fs triggers ultrafast magnetic phase transition in Ni and discover a new time scale in the process of ultrafast demagnetization, where the transient electron temperature alone dictates the magnetic response. Expand
The physics of manganites: Structure and transport
The fundamental physical properties of doped ${\mathrm{LaMnO}}_{3},$ generically termed ``manganites,'' and much of the underlying physics, were known more than 40 years ago. This article firstExpand
Photoinduced melting of antiferromagnetic order in La(0.5)Sr(1.5)MnO4 measured using ultrafast resonant soft x-ray diffraction.
TLDR
The results of ultrafast resonant soft x-ray diffraction are interpreted as evidence of destabilization in the short-range exchange pattern with no significant relaxation of the long-range Jahn-Teller distortions. Expand
Dichotomy in ultrafast atomic dynamics as direct evidence of polaron formation in manganites
Polaron transport, in which electron motion is strongly coupled to the underlying lattice deformation or phonons, is crucial for understanding electrical and optical conductivities in many solids.Expand
...
1
2
3
4
5
...