Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy

R. P. Prasankumar; H. J. Lee; H. Okamura; H. Imai; Y. Shimakawa; Y. Kubo; S. Zvyagin; K. Kamenev; G. Balakrishnan; D. Mc K. Paul; S. A. Trugman; A. J. Taylor; R. D. Averitt

doi:10.1016/j.physb.2007.10.186

Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy

R. P. Prasankumar
, H. J. Lee
, H. Okamura
, H. Imai
, Y. Shimakawa
, Y. Kubo
, S. Zvyagin
, K. Kamenev
, G. Balakrishnan
, D. Mc K. Paul
, S. A. Trugman
, A. J. Taylor
, R. D. Averitt

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

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, Nd_0.5Sr_0.5MnO₃ 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.

Original language	English
Pages (from-to)	1401-1403
Number of pages	3
Journal	Physica B: Physics of Condensed Matter
Volume	403
Issue number	5-9
DOIs	https://doi.org/10.1016/j.physb.2007.10.186
State	Published - Apr 1 2008

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10.1016/j.physb.2007.10.186

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Prasankumar, R. P., Lee, H. J., Okamura, H., Imai, H., Shimakawa, Y., Kubo, Y., Zvyagin, S., Kamenev, K., Balakrishnan, G., Paul, D. M. K., Trugman, S. A., Taylor, A. J., & Averitt, R. D. (2008). Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy. Physica B: Physics of Condensed Matter, 403(5-9), 1401-1403. https://doi.org/10.1016/j.physb.2007.10.186

@article{b062e9a2945644368e553fba6af912a4,

title = "Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy",

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.",

author = "Prasankumar, \{R. P.\} and Lee, \{H. J.\} and H. Okamura and H. Imai and Y. Shimakawa and Y. Kubo and S. Zvyagin and K. Kamenev and G. Balakrishnan and Paul, \{D. Mc K.\} and Trugman, \{S. A.\} and Taylor, \{A. J.\} and Averitt, \{R. D.\}",

year = "2008",

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day = "1",

doi = "10.1016/j.physb.2007.10.186",

language = "English",

volume = "403",

pages = "1401--1403",

journal = "Physica B: Physics of Condensed Matter",

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Prasankumar, RP, Lee, HJ, Okamura, H, Imai, H, Shimakawa, Y, Kubo, Y, Zvyagin, S, Kamenev, K, Balakrishnan, G, Paul, DMK, Trugman, SA, Taylor, AJ & Averitt, RD 2008, 'Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy', Physica B: Physics of Condensed Matter, vol. 403, no. 5-9, pp. 1401-1403. https://doi.org/10.1016/j.physb.2007.10.186

TY - JOUR

T1 - Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy

AU - Prasankumar, R. P.

AU - Lee, H. J.

AU - Okamura, H.

AU - Imai, H.

AU - Shimakawa, Y.

AU - Kubo, Y.

AU - Zvyagin, S.

AU - Kamenev, K.

AU - Balakrishnan, G.

AU - Paul, D. Mc K.

AU - Trugman, S. A.

AU - Taylor, A. J.

AU - Averitt, R. D.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/39749157052

U2 - 10.1016/j.physb.2007.10.186

DO - 10.1016/j.physb.2007.10.186

M3 - Article

SN - 0921-4526

VL - 403

SP - 1401

EP - 1403

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

IS - 5-9

ER -

Probing nanoscale inhomogeneities in transition metal oxides with ultrafast mid-infrared spectroscopy

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