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Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy
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Prasankumar, Rohit P., Lee, H. J., Okamura, Hidekazu, Imai, Hideto, Shimakawa, Yuichi, Kubo, Y., Zvyagin, S., Kamenev, K., Balakrishnan, Geetha, Paul, Don McK., Trugman, S. A., Taylor, Antoinette J. and Averitt, R. D. (2008) Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy. Physica B: Condensed Matter, Vol.403 (No.5-9). pp. 1401-1403. doi:10.1016/j.physb.2007.10.186
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Official URL: http://dx.doi.org/10.1016/j.physb.2007.10.186
Abstract
Transition metal oxides are a rich area of investigation for experimentalists and theorists alike due to their coupling of multiple degrees of freedom with similar interaction strengths. This complexity leads to intrinsic phase inhomogeneities that are believed to play a significant role in the fascinating phenomena observed in these systems. We use ultrafast mid-infrared spectroscopy to probe quasiparticle dynamics in the colossal magnetoresistive oxides, Nd0.5Sr0.5MnO3 and Tl2Mn2O7. Our results demonstrate for the first time that ultrafast spectroscopy is sensitive to the presence of nanoscale phase inhomogeneities, strongly indicating the universality of phase coexistence in complex transition metal oxides. (C) 2007 Elsevier B.V. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Divisions: | Faculty of Science > Physics | ||||
| Library of Congress Subject Headings (LCSH): | Picosecond pulses, Laser pulses, Ultrashort, Magnetoresistance, Transition metal oxides | ||||
| Journal or Publication Title: | Physica B: Condensed Matter | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 09214526 | ||||
| Official Date: | 1 April 2008 | ||||
| Dates: |
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| Volume: | Vol.403 | ||||
| Number: | No.5-9 | ||||
| Number of Pages: | 3 | ||||
| Page Range: | pp. 1401-1403 | ||||
| DOI: | 10.1016/j.physb.2007.10.186 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Version or Related Resource: | Presented at: International Conference on Strongly Correlated Electron Systems (SCES 2007), Houston, TX, May 13-18, 2007 | ||||
| Type of Event: | Conference |
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