Nanoscale anisotropic structural correlations in the paramagnetic and ferromagnetic phases of Nd0.5Sr0.5MnO3

V. Kiryukhin, B. G. Kim, Takuro Katsufuji, J. P. Hill, S. W. Cheong

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19 Citations (Scopus)

Abstract

We report x-ray scattering studies of short-range structural correlations and diffuse scattering in Nd0.5Sr0.5MnO3. On cooling, this material undergoes a series of transitions, first from a paramagnetic insulating (PI) to a ferromagnetic metallic (FM) phase, and then to a charge-ordered (CO) insulating state. Highly anisotropic structural correlations were found in both the PI and FM states of this compound. The correlations increase with decreasing temperature, reaching a maximum at the CO transition temperature. Below this temperature, they abruptly collapsed. Single-polaron diffuse scattering was also observed in both the PI and FM states suggesting that substantial local lattice distortions are present in these phases. We argue that our measurements indicate that nanoscale regions exhibiting layered orbital order exist in the paramagnetic and ferromagnetic phases of Nd0.5Sr0.5MnO3.

Original languageEnglish
Article number144406
Pages (from-to)1444061-1444065
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume63
Issue number14
Publication statusPublished - 2001
Externally publishedYes

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Scattering
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x ray scattering
scattering
Superconducting transition temperature
transition temperature
Cooling
cooling
X rays
orbitals
Temperature
temperature

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  • Condensed Matter Physics

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Nanoscale anisotropic structural correlations in the paramagnetic and ferromagnetic phases of Nd0.5Sr0.5MnO3 . / Kiryukhin, V.; Kim, B. G.; Katsufuji, Takuro; Hill, J. P.; Cheong, S. W.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 63, No. 14, 144406, 2001, p. 1444061-1444065.

Research output: Contribution to journalArticle

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AU - Hill, J. P.

AU - Cheong, S. W.

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AB - We report x-ray scattering studies of short-range structural correlations and diffuse scattering in Nd0.5Sr0.5MnO3. On cooling, this material undergoes a series of transitions, first from a paramagnetic insulating (PI) to a ferromagnetic metallic (FM) phase, and then to a charge-ordered (CO) insulating state. Highly anisotropic structural correlations were found in both the PI and FM states of this compound. The correlations increase with decreasing temperature, reaching a maximum at the CO transition temperature. Below this temperature, they abruptly collapsed. Single-polaron diffuse scattering was also observed in both the PI and FM states suggesting that substantial local lattice distortions are present in these phases. We argue that our measurements indicate that nanoscale regions exhibiting layered orbital order exist in the paramagnetic and ferromagnetic phases of Nd0.5Sr0.5MnO3.

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