Origin of a spin-state polaron in lightly hole doped LaCoO3

A. Alfonsov; E. Vavilova; V. Kataev; B. Büchner; A. Podlesnyak; M. Russina; A. Furrer; Strässle Th Strässle; E. Pomjakushina; K. Conder; I. Khomskii

doi:10.1088/1742-6596/150/4/042003

Origin of a spin-state polaron in lightly hole doped LaCoO₃

A. Alfonsov, E. Vavilova, V. Kataev, B. Büchner, A. Podlesnyak, M. Russina, A. Furrer, Strässle Th Strässle, E. Pomjakushina, K. Conder, I. Khomskii

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6 Scopus citations

Abstract

We performed electron spin and nuclear magnetic resonance and inelastic neutron scattering measurements of a single crystal of lightly hole-doped La₁-_xSr_xCoO₃, x ∼ 0.002 in order to establish the origin of a surprisingly strong magnetization due to a very small Sr doping. The data provide experimental evidence for the creation at low temperatures of extended spin clusters with a large spin multiplicity. We argue that the doped hole couples ferromagnetically seven magnetic Co ions yielding a spin-state polaron with a huge local magnetic moment with a strong orbital contribution.

Original language	English
Article number	042003
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	4
DOIs	https://doi.org/10.1088/1742-6596/150/4/042003
State	Published - 2009
Externally published	Yes

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title = "Origin of a spin-state polaron in lightly hole doped LaCoO3",

abstract = "We performed electron spin and nuclear magnetic resonance and inelastic neutron scattering measurements of a single crystal of lightly hole-doped La1-xSrxCoO3, x ∼ 0.002 in order to establish the origin of a surprisingly strong magnetization due to a very small Sr doping. The data provide experimental evidence for the creation at low temperatures of extended spin clusters with a large spin multiplicity. We argue that the doped hole couples ferromagnetically seven magnetic Co ions yielding a spin-state polaron with a huge local magnetic moment with a strong orbital contribution.",

author = "A. Alfonsov and E. Vavilova and V. Kataev and B. B{\"u}chner and A. Podlesnyak and M. Russina and A. Furrer and {Th Str{\"a}ssle}, Str{\"a}ssle and E. Pomjakushina and K. Conder and I. Khomskii",

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doi = "10.1088/1742-6596/150/4/042003",

language = "English",

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journal = "Journal of Physics: Conference Series",

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TY - JOUR

T1 - Origin of a spin-state polaron in lightly hole doped LaCoO3

AU - Alfonsov, A.

AU - Vavilova, E.

AU - Kataev, V.

AU - Büchner, B.

AU - Podlesnyak, A.

AU - Russina, M.

AU - Furrer, A.

AU - Th Strässle, Strässle

AU - Pomjakushina, E.

AU - Conder, K.

AU - Khomskii, I.

PY - 2009

Y1 - 2009

N2 - We performed electron spin and nuclear magnetic resonance and inelastic neutron scattering measurements of a single crystal of lightly hole-doped La1-xSrxCoO3, x ∼ 0.002 in order to establish the origin of a surprisingly strong magnetization due to a very small Sr doping. The data provide experimental evidence for the creation at low temperatures of extended spin clusters with a large spin multiplicity. We argue that the doped hole couples ferromagnetically seven magnetic Co ions yielding a spin-state polaron with a huge local magnetic moment with a strong orbital contribution.

AB - We performed electron spin and nuclear magnetic resonance and inelastic neutron scattering measurements of a single crystal of lightly hole-doped La1-xSrxCoO3, x ∼ 0.002 in order to establish the origin of a surprisingly strong magnetization due to a very small Sr doping. The data provide experimental evidence for the creation at low temperatures of extended spin clusters with a large spin multiplicity. We argue that the doped hole couples ferromagnetically seven magnetic Co ions yielding a spin-state polaron with a huge local magnetic moment with a strong orbital contribution.

UR - http://www.scopus.com/inward/record.url?scp=77952506083&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/150/4/042003

DO - 10.1088/1742-6596/150/4/042003

M3 - Article

AN - SCOPUS:77952506083

SN - 1742-6588

VL - 150

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 4

M1 - 042003

ER -

Origin of a spin-state polaron in lightly hole doped LaCoO₃

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