Evolution of the low-frequency spin dynamics in ferromagnetic manganites

J. A. Fernandez-Baca; P. Dai; H. Y. Hwang; C. Kloc; S. W. Cheong

doi:10.1103/PhysRevLett.80.4012

Evolution of the low-frequency spin dynamics in ferromagnetic manganites

J. A. Fernandez-Baca
, P. Dai
, H. Y. Hwang
, C. Kloc
, S. W. Cheong

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

161 Scopus citations

Abstract

Neutron scattering was used to study the ferromagnetic manganites Nd_0.7Sr_0.3MnO₃ (T_C = 197.9K) and Pr_0.63Sr_0.37MnO₃ (T_C = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around T_C. While the formation of spin clusters of size (∼20Å) dominates the spin dynamics of the 197.9 K sample close to T_C, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.

Original language	English
Pages (from-to)	4012-4015
Number of pages	4
Journal	Physical Review Letters
Volume	80
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.80.4012
State	Published - 1998

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title = "Evolution of the low-frequency spin dynamics in ferromagnetic manganites",

abstract = "Neutron scattering was used to study the ferromagnetic manganites Nd0.7Sr0.3MnO3 (TC = 197.9K) and Pr0.63Sr0.37MnO3 (TC = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around TC. While the formation of spin clusters of size (∼20{\AA}) dominates the spin dynamics of the 197.9 K sample close to TC, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.",

author = "Fernandez-Baca, \{J. A.\} and P. Dai and Hwang, \{H. Y.\} and C. Kloc and Cheong, \{S. W.\}",

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T1 - Evolution of the low-frequency spin dynamics in ferromagnetic manganites

AU - Fernandez-Baca, J. A.

AU - Dai, P.

AU - Hwang, H. Y.

AU - Kloc, C.

AU - Cheong, S. W.

PY - 1998

Y1 - 1998

N2 - Neutron scattering was used to study the ferromagnetic manganites Nd0.7Sr0.3MnO3 (TC = 197.9K) and Pr0.63Sr0.37MnO3 (TC = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around TC. While the formation of spin clusters of size (∼20Å) dominates the spin dynamics of the 197.9 K sample close to TC, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.

AB - Neutron scattering was used to study the ferromagnetic manganites Nd0.7Sr0.3MnO3 (TC = 197.9K) and Pr0.63Sr0.37MnO3 (TC = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around TC. While the formation of spin clusters of size (∼20Å) dominates the spin dynamics of the 197.9 K sample close to TC, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.

UR - https://www.scopus.com/pages/publications/0343533517

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DO - 10.1103/PhysRevLett.80.4012

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VL - 80

SP - 4012

EP - 4015

JO - Physical Review Letters

JF - Physical Review Letters

IS - 18

ER -

Evolution of the low-frequency spin dynamics in ferromagnetic manganites

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