Inhomogeneity in the spin channel of ferromagnetic CMR manganites

R. H. Heffner; J. E. Sonier; D. E. MacLaughlin; G. J. Nieuwenhuys; F. Mezei; G. Ehlers; J. F. Mitchell; S. W. Cheong

doi:10.1016/S0921-4526(02)01675-7

Inhomogeneity in the spin channel of ferromagnetic CMR manganites

R. H. Heffner, J. E. Sonier, D. E. MacLaughlin, G. J. Nieuwenhuys, F. Mezei, G. Ehlers, J. F. Mitchell, S. W. Cheong

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

5 Scopus citations

Abstract

Colossal magnetoresistance manganites are archetypes in which to study the strong coupling between spin, charge and lattice degrees of freedom in materials. We present muon spin-lattice relaxation data in ferromagnetic (FM) ground state materials from the manganite series La_1-xCa_xMnO₃ and La_1-x-yPr_yCa_xMnO₃. These measurements reveal several characteristic relaxation modes arising from the strong spin-charge-lattice interactions. We also present results from neutron-spin-echo spectroscopy, which directly measures the spin-spin correlation function in a time domain comparable to μSR. A qualitative model for the FM transition in the manganites involving microscopic phase separation is suggested by these data.

Original language	English
Pages (from-to)	494-499
Number of pages	6
Journal	Physica B: Physics of Condensed Matter
Volume	326
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(02)01675-7
State	Published - Feb 2003
Externally published	Yes

Funding

Work at Los Alamos performed under the auspices of the US DOE/BES. Work at Argonne has been carried out by the University of Chicago as Operator of Argonne National Laboratory (‘Argonne’) under Contract No. W-31-109-ENG-38 with the US Department of Energy, at U. C. Riverside by the US NSF (Grant Nos. DMR-9731361 and DMR-0102293) and in The Netherlands by agencies FOM and NOW (Leiden). The US Government retains for itself, and others acting on its behalf, a paid-up, nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government

Funders	Funder number
NOW
National Science Foundation	DMR-9731361, DMR-0102293
U.S. Department of Energy
Argonne National Laboratory	W-31-109-ENG-38
Stichting voor Fundamenteel Onderzoek der Materie

Keywords

Colossal magnetoresistance
Manganites
Muon spin relaxation

Access to Document

10.1016/S0921-4526(02)01675-7

Cite this

@article{8d89d14fb53d464e997aedd231bed52d,

title = "Inhomogeneity in the spin channel of ferromagnetic CMR manganites",

abstract = "Colossal magnetoresistance manganites are archetypes in which to study the strong coupling between spin, charge and lattice degrees of freedom in materials. We present muon spin-lattice relaxation data in ferromagnetic (FM) ground state materials from the manganite series La1-xCaxMnO3 and La1-x-yPryCaxMnO3. These measurements reveal several characteristic relaxation modes arising from the strong spin-charge-lattice interactions. We also present results from neutron-spin-echo spectroscopy, which directly measures the spin-spin correlation function in a time domain comparable to μSR. A qualitative model for the FM transition in the manganites involving microscopic phase separation is suggested by these data.",

keywords = "Colossal magnetoresistance, Manganites, Muon spin relaxation",

author = "Heffner, {R. H.} and Sonier, {J. E.} and MacLaughlin, {D. E.} and Nieuwenhuys, {G. J.} and F. Mezei and G. Ehlers and Mitchell, {J. F.} and Cheong, {S. W.}",

year = "2003",

month = feb,

doi = "10.1016/S0921-4526(02)01675-7",

language = "English",

volume = "326",

pages = "494--499",

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

issn = "0921-4526",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Inhomogeneity in the spin channel of ferromagnetic CMR manganites

AU - Heffner, R. H.

AU - Sonier, J. E.

AU - MacLaughlin, D. E.

AU - Nieuwenhuys, G. J.

AU - Mezei, F.

AU - Ehlers, G.

AU - Mitchell, J. F.

AU - Cheong, S. W.

PY - 2003/2

Y1 - 2003/2

N2 - Colossal magnetoresistance manganites are archetypes in which to study the strong coupling between spin, charge and lattice degrees of freedom in materials. We present muon spin-lattice relaxation data in ferromagnetic (FM) ground state materials from the manganite series La1-xCaxMnO3 and La1-x-yPryCaxMnO3. These measurements reveal several characteristic relaxation modes arising from the strong spin-charge-lattice interactions. We also present results from neutron-spin-echo spectroscopy, which directly measures the spin-spin correlation function in a time domain comparable to μSR. A qualitative model for the FM transition in the manganites involving microscopic phase separation is suggested by these data.

AB - Colossal magnetoresistance manganites are archetypes in which to study the strong coupling between spin, charge and lattice degrees of freedom in materials. We present muon spin-lattice relaxation data in ferromagnetic (FM) ground state materials from the manganite series La1-xCaxMnO3 and La1-x-yPryCaxMnO3. These measurements reveal several characteristic relaxation modes arising from the strong spin-charge-lattice interactions. We also present results from neutron-spin-echo spectroscopy, which directly measures the spin-spin correlation function in a time domain comparable to μSR. A qualitative model for the FM transition in the manganites involving microscopic phase separation is suggested by these data.

KW - Colossal magnetoresistance

KW - Manganites

KW - Muon spin relaxation

UR - http://www.scopus.com/inward/record.url?scp=0037303534&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(02)01675-7

DO - 10.1016/S0921-4526(02)01675-7

M3 - Article

AN - SCOPUS:0037303534

SN - 0921-4526

VL - 326

SP - 494

EP - 499

JO - Physica B: Physics of Condensed Matter

JF - Physica B: Physics of Condensed Matter

IS - 1-4

ER -

Inhomogeneity in the spin channel of ferromagnetic CMR manganites

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this