Speaker
Dr
M Garganourakis
(Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Description
Manganite compounds have attracted a lot of the scientific interest by virtue of the unusual electronic and magnetic properties among them 'colossal magnetoresistance', and large magnetoresistive response. Here we report the writing, the in-situ observation and erasing of magnetic bits to Pr0.5Ca0.5MnO3 by illuminating with X-rays. Opposite to what is known so far, the antiferromagnetic magnetic signal increased, the magnetic order improved and the magnitude of the imprinted information could be controlled. We attribute this effect to the canting of manganese magnetic moments by the X-rays, accompanied by changes in the structure established by increase of the conductance. This photodoping effect manifests strong interaction of X-rays with magnetic structures and contributes to further understanding of photoconductivity. Furthermore, the ability to imprint information with a new technique may also lead to further insight in the interaction of X-rays with matter and a new development of memory devices.
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RIXS
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Talk
Primary author
Dr
M Garganourakis
(Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Co-authors
Dr
H Wadati
(Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan)
Dr
J Okamoto
(Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801 Japan)
Dr
M Kawasaki
(Cross-Correlated Materials Research Group (CMRG) and Correlated Electron Research Group (CERG), Advanced Science Institute, RIKEN, Wako 351-0198, Japan and WPI-Advanced Institute for Materials Research (AIMR), Tohoku University, Sendai 980-8577, Japan)
Dr
M Nakamura
(Cross-Correlated Materials Research Group (CMRG) and Correlated Electron Research Group (CERG), Advanced Science Institute, RIKEN, Wako 351-0198, Japan)
Dr
S W Huang
(Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Dr
U Staub
(Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Dr
V Scagnoli
(Swiss Light Source, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland)
Dr
Y Tokura
(Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Hongo, Tokyo 113-8656, Japan and Cross-Correlated Materials Research Group (CMRG) and Correlated Electron Research Group (CERG), Advanced Science Institute, RIKEN, Wako 351-0198, Japan)
