ISSN:
1432-0649
Keywords:
PACS: 71.30.+h; 71.28.+d; 72.40.+w
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. Ultrafast melting of a charge-ordered state has been observed in the photo-irradiated colossal magnetoresistive compound Pr0.7Ca0.3MnO3. Pump-and-probe spectroscopy experiments reveal the formation of a conducting phase with typical features of an insulator–metal transition (IMT) after less than 1 ps. This phase is metastable and can be maintained for about 1 μs unless it is stabilized persistently into a pathlike metallic region by an electric field. Although laser-induced lattice heating may play a role in the initial excitation, electronic correlations are the dominant effect which leads to the formation of the metallic state upon the breakdown of the charge-ordered state.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003400000338
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