Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice

H Kawano-Furukawa; CJ Bowell; JS White; Richard Heslop; Alistair Cameron; Edward Forgan; K Kihou; CH Lee; A Iyo; H Eisaki; T Saito; H Fukazawa; Y Kohori; R Cubitt; CD Dewhurst; JL Gavilano; M Zolliker

doi:10.1103/PhysRevB.84.024507

Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice

H Kawano-Furukawa, CJ Bowell, JS White, Richard Heslop, Alistair Cameron, Edward Forgan, K Kihou, CH Lee, A Iyo, H Eisaki, T Saito, H Fukazawa, Y Kohori, R Cubitt, CD Dewhurst, JL Gavilano, M Zolliker

Physics and Astronomy

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Abstract

By neutron scattering, we have observed a well-ordered magnetic vortex lattice (VL) in KFe2As2 single crystals. With the field along the c axis, a nearly isotropic hexagonal VL is formed, with no symmetry transitions up to high fields, indicating a small anisotropy of the superconducting state around this axis. This rules out line nodes parallel to the c axis, and thus d-wave or anisotropic s-wave pairing. However, the strong temperature dependence of the signal at T

Original language	English
Pages (from-to)	024507
Number of pages	1
Journal	Physical Review B
Volume	84
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.84.024507
Publication status	Published - 1 Jul 2011

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10.1103/PhysRevB.84.024507

Magnetic Flux Structures and Phase Transitions in Unconventional and Conventional Superconductors
Forgan, T. & Blackburn, E.
Engineering & Physical Science Research Council
1/04/09 → 30/09/12
Project: Research Councils

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Kawano-Furukawa, H., Bowell, CJ., White, JS., Heslop, R., Cameron, A., Forgan, E., Kihou, K., Lee, CH., Iyo, A., Eisaki, H., Saito, T., Fukazawa, H., Kohori, Y., Cubitt, R., Dewhurst, CD., Gavilano, JL., & Zolliker, M. (2011). Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice. Physical Review B, 84(2), 024507. https://doi.org/10.1103/PhysRevB.84.024507

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abstract = "By neutron scattering, we have observed a well-ordered magnetic vortex lattice (VL) in KFe2As2 single crystals. With the field along the c axis, a nearly isotropic hexagonal VL is formed, with no symmetry transitions up to high fields, indicating a small anisotropy of the superconducting state around this axis. This rules out line nodes parallel to the c axis, and thus d-wave or anisotropic s-wave pairing. However, the strong temperature dependence of the signal at T ",

author = "H Kawano-Furukawa and CJ Bowell and JS White and Richard Heslop and Alistair Cameron and Edward Forgan and K Kihou and CH Lee and A Iyo and H Eisaki and T Saito and H Fukazawa and Y Kohori and R Cubitt and CD Dewhurst and JL Gavilano and M Zolliker",

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Kawano-Furukawa, H, Bowell, CJ, White, JS, Heslop, R, Cameron, A, Forgan, E, Kihou, K, Lee, CH, Iyo, A, Eisaki, H, Saito, T, Fukazawa, H, Kohori, Y, Cubitt, R, Dewhurst, CD, Gavilano, JL & Zolliker, M 2011, 'Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice', Physical Review B, vol. 84, no. 2, pp. 024507. https://doi.org/10.1103/PhysRevB.84.024507

TY - JOUR

T1 - Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice

AU - Kawano-Furukawa, H

AU - Bowell, CJ

AU - White, JS

AU - Heslop, Richard

AU - Cameron, Alistair

AU - Forgan, Edward

AU - Kihou, K

AU - Lee, CH

AU - Iyo, A

AU - Eisaki, H

AU - Saito, T

AU - Fukazawa, H

AU - Kohori, Y

AU - Cubitt, R

AU - Dewhurst, CD

AU - Gavilano, JL

AU - Zolliker, M

PY - 2011/7/1

Y1 - 2011/7/1

N2 - By neutron scattering, we have observed a well-ordered magnetic vortex lattice (VL) in KFe2As2 single crystals. With the field along the c axis, a nearly isotropic hexagonal VL is formed, with no symmetry transitions up to high fields, indicating a small anisotropy of the superconducting state around this axis. This rules out line nodes parallel to the c axis, and thus d-wave or anisotropic s-wave pairing. However, the strong temperature dependence of the signal at T

AB - By neutron scattering, we have observed a well-ordered magnetic vortex lattice (VL) in KFe2As2 single crystals. With the field along the c axis, a nearly isotropic hexagonal VL is formed, with no symmetry transitions up to high fields, indicating a small anisotropy of the superconducting state around this axis. This rules out line nodes parallel to the c axis, and thus d-wave or anisotropic s-wave pairing. However, the strong temperature dependence of the signal at T

U2 - 10.1103/PhysRevB.84.024507

DO - 10.1103/PhysRevB.84.024507

M3 - Article

SN - 1095-3795

SN - 2469-9969

VL - 84

SP - 024507

JO - Physical Review B

JF - Physical Review B

IS - 2

ER -

Gap in KFe2As2 studied by small-angle neutron scattering observations of the magnetic vortex lattice

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Magnetic Flux Structures and Phase Transitions in Unconventional and Conventional Superconductors

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