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Ultrafast x-ray and optical signatures of phase competition and separation underlying the photoinduced metallic phase inPr1−xCaxMnO3

M. C. Langner, S. Zhou, G. Coslovich, Y.-D. Chuang, Y. Zhu, J. S. Robinson, W. F. Schlotter, J. J. Turner, M. P. Minitti, R. G. Moore, W. S. Lee, D. H. Lu (+6 others)
2015 Physical Review B  

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The coexistence of ferromagnetic and antiferromagnetic phases, and their role in the photo-induced insulatorto-metal transition in Pr1−xCaxMnO3 are revealed via ultrafast resonant x-ray diffraction and broadband optical reflectivity measurements. The antiferromagnetic scattering signal and ferromagnetically sensitive reflectivity measurements show similar, strongly temperature dependent timescales. We attribute the common dynamics to an activation barrier between the equilibrium insulating
more » ... and the photo-induced metallic phase related to interactions between the phase separated ferromagnetic and antiferromagnetic insulating phases. 75.47.Gk,
doi:10.1103/physrevb.92.155148 fatcat:mqng3clcqrbzridic4jc3pmyd4
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M. C. Langner, S. Zhou, G. Coslovich, Y.-D. Chuang, Y. Zhu, J. S. Robinson, W. F. Schlotter, J. J. Turner, M. P. Minitti, R. G. Moore, W. S. Lee, D. H. Lu, D. Doering, P. Denes, Y. Tomioka, Y. Tokura, R. A. Kaindl, R. W. Schoenlein. "Ultrafast x-ray and optical signatures of phase competition and separation underlying the photoinduced metallic phase inPr1−xCaxMnO3." Physical Review B 92.15 (2015)