| Autor: |
S Y, Zhou, M C, Langner, Y, Zhu, Y-D, Chuang, M, Rini, T E, Glover, M P, Hertlein, A G Cruz, Gonzalez, N, Tahir, Y, Tomioka, Y, Tokura, Z, Hussain, R W, Schoenlein |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Scientific Reports |
| ISSN: |
2045-2322 |
| Popis: |
Electronic orderings of charges, orbitals and spins are observed in many strongly correlated electron materials, and revealing their dynamics is a critical step toward undertsanding the underlying physics of important emergent phenomena. Here we use time-resolved resonant soft x-ray scattering spectroscopy to probe the dynamics of antiferromagnetic spin ordering in the manganite Pr0.7Ca0.3MnO3 following ultrafast photo-exitation. Our studies reveal a glass-like recovery of the spin ordering and a crossover in the dimensionality of the restoring interaction from quasi-1D at low pump fluence to 3D at high pump fluence. This behavior arises from the metastable state created by photo-excitation, a state characterized by spin disordered metallic droplets within the larger charge- and spin-ordered insulating domains. Comparison with time-resolved resistivity measurements suggests that the collapse of spin ordering is correlated with the insulator-to-metal transition, but the recovery of the insulating phase does not depend on the re-establishment of the spin ordering. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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