Neutron scattering study of spin dynamics in superconducting (Tl,Rb)2Fe4Se5

Songxue Chi; Feng Ye; Wei Bao; Minghu Fang; H. D. Wang; C. H. Dong; A. T. Savici; G. E. Granroth; M. B. Stone; R. S. Fishman

doi:10.1103/PhysRevB.87.100501

Neutron scattering study of spin dynamics in superconducting (Tl,Rb)₂Fe₄Se₅

Songxue Chi, Feng Ye, Wei Bao^*, Minghu Fang, H. D. Wang, C. H. Dong, A. T. Savici, G. E. Granroth, M. B. Stone, R. S. Fishman

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

15 Citations (Scopus)

Abstract

We observed in superconducting (Tl,Rb)₂Fe₄Se₅ spin-wave branches that span an energy range from 6.5 to 209 meV. Spin dynamics are successfully described by a Heisenberg localized spin model whose dominant in-plane interactions include only the nearest (J ₁ and J ₁′) and next nearest neighbor (J ₂ and J ₂′) exchange terms within and between the tetramer spin blocks, respectively. These experimentally determined exchange constants would crucially constrain the theoretical viewpoints on magnetism and superconductivity in the Fe-based materials.

Original language	English
Article number	100501
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	87
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.87.100501
Publication status	Published - 1 Mar 2013
Externally published	Yes

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@article{6a9b5a79ddf6471ead10824dafe5a7fc,

title = "Neutron scattering study of spin dynamics in superconducting (Tl,Rb)2Fe4Se5",

abstract = "We observed in superconducting (Tl,Rb)2Fe4Se5 spin-wave branches that span an energy range from 6.5 to 209 meV. Spin dynamics are successfully described by a Heisenberg localized spin model whose dominant in-plane interactions include only the nearest (J 1 and J 1′) and next nearest neighbor (J 2 and J 2′) exchange terms within and between the tetramer spin blocks, respectively. These experimentally determined exchange constants would crucially constrain the theoretical viewpoints on magnetism and superconductivity in the Fe-based materials. ",

author = "Songxue Chi and Feng Ye and Wei Bao and Minghu Fang and Wang, {H. D.} and Dong, {C. H.} and Savici, {A. T.} and Granroth, {G. E.} and Stone, {M. B.} and Fishman, {R. S.}",

year = "2013",

month = mar,

day = "1",

doi = "10.1103/PhysRevB.87.100501",

language = "English",

volume = "87",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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TY - JOUR

T1 - Neutron scattering study of spin dynamics in superconducting (Tl,Rb)2Fe4Se5

AU - Chi, Songxue

AU - Ye, Feng

AU - Bao, Wei

AU - Fang, Minghu

AU - Wang, H. D.

AU - Dong, C. H.

AU - Savici, A. T.

AU - Granroth, G. E.

AU - Stone, M. B.

AU - Fishman, R. S.

PY - 2013/3/1

Y1 - 2013/3/1

N2 - We observed in superconducting (Tl,Rb)2Fe4Se5 spin-wave branches that span an energy range from 6.5 to 209 meV. Spin dynamics are successfully described by a Heisenberg localized spin model whose dominant in-plane interactions include only the nearest (J 1 and J 1′) and next nearest neighbor (J 2 and J 2′) exchange terms within and between the tetramer spin blocks, respectively. These experimentally determined exchange constants would crucially constrain the theoretical viewpoints on magnetism and superconductivity in the Fe-based materials.

AB - We observed in superconducting (Tl,Rb)2Fe4Se5 spin-wave branches that span an energy range from 6.5 to 209 meV. Spin dynamics are successfully described by a Heisenberg localized spin model whose dominant in-plane interactions include only the nearest (J 1 and J 1′) and next nearest neighbor (J 2 and J 2′) exchange terms within and between the tetramer spin blocks, respectively. These experimentally determined exchange constants would crucially constrain the theoretical viewpoints on magnetism and superconductivity in the Fe-based materials.

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U2 - 10.1103/PhysRevB.87.100501

DO - 10.1103/PhysRevB.87.100501

M3 - RGC 21 - Publication in refereed journal

SN - 1098-0121

VL - 87

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 10

M1 - 100501

ER -