Small angle neutron diffraction studies of vortex structures in high temperature superconductors

R. Cubitt; E.M. Forgan; M.T. Wylie; G. Yang; S.L. Lee; H. Keller; D.M. Paul; H.A. Mook; M. Yethiraj; P.H. Kes; T.W. Li; A.A. Menovsky; Z. Tarnawski; K. Mortensen

doi:10.1016/0921-4534(94)92512-7

Small angle neutron diffraction studies of vortex structures in high temperature superconductors

R. Cubitt, E.M. Forgan, M.T. Wylie, G. Yang, S.L. Lee, H. Keller, D.M. Paul, H.A. Mook, M. Yethiraj, P.H. Kes, T.W. Li, A.A. Menovsky, Z. Tarnawski, K. Mortensen

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Abstract

We have used neutron scattering to provide direct information about flux structures in the bulk of crystals of the superconductor Bi2Sr2CaCu2O8. Its extremely high effective mass anisotropy, makes the flux lattice susceptable to melting and also to decomposition into 'pancake' vortices, which would give a more two-dimensional vortex structure. At low temperatures and fields the scattered intensity is consistent with a three dimensional flux-line structure. At higher fields and temperatures, the scattering from the flux lattice dissapears well below T-c. We can associate this dissappearance with the above changes in the vortex structure. We compare the neutron scattering results with macroscopic measurements of magnetisation.

Original language	English
Journal	Physica C: Superconductivity and its Applications
Volume	235-240
Pages (from-to)	2583-2584
ISSN	0921-4534
DOIs	https://doi.org/10.1016/0921-4534(94)92512-7
Publication status	Published - 1994

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Cubitt, R., Forgan, E. M., Wylie, M. T., Yang, G., Lee, S. L., Keller, H., Paul, D. M., Mook, H. A., Yethiraj, M., Kes, P. H., Li, T. W., Menovsky, A. A., Tarnawski, Z., & Mortensen, K. (1994). Small angle neutron diffraction studies of vortex structures in high temperature superconductors. Physica C: Superconductivity and its Applications, 235-240, 2583-2584. https://doi.org/10.1016/0921-4534(94)92512-7

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title = "Small angle neutron diffraction studies of vortex structures in high temperature superconductors",

abstract = "We have used neutron scattering to provide direct information about flux structures in the bulk of crystals of the superconductor Bi2Sr2CaCu2O8. Its extremely high effective mass anisotropy, makes the flux lattice susceptable to melting and also to decomposition into 'pancake' vortices, which would give a more two-dimensional vortex structure. At low temperatures and fields the scattered intensity is consistent with a three dimensional flux-line structure. At higher fields and temperatures, the scattering from the flux lattice dissapears well below T-c. We can associate this dissappearance with the above changes in the vortex structure. We compare the neutron scattering results with macroscopic measurements of magnetisation. ",

keywords = "Materialer med s{\ae}rlige fysiske og kemiske egenskaber",

author = "R. Cubitt and E.M. Forgan and M.T. Wylie and G. Yang and S.L. Lee and H. Keller and D.M. Paul and H.A. Mook and M. Yethiraj and P.H. Kes and T.W. Li and A.A. Menovsky and Z. Tarnawski and K. Mortensen",

year = "1994",

doi = "10.1016/0921-4534(94)92512-7",

language = "English",

volume = "235-240",

pages = "2583--2584",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

}

Cubitt, R, Forgan, EM, Wylie, MT, Yang, G, Lee, SL, Keller, H, Paul, DM, Mook, HA, Yethiraj, M, Kes, PH, Li, TW, Menovsky, AA, Tarnawski, Z & Mortensen, K 1994, 'Small angle neutron diffraction studies of vortex structures in high temperature superconductors', Physica C: Superconductivity and its Applications, vol. 235-240, pp. 2583-2584. https://doi.org/10.1016/0921-4534(94)92512-7

TY - JOUR

T1 - Small angle neutron diffraction studies of vortex structures in high temperature superconductors

AU - Cubitt, R.

AU - Forgan, E.M.

AU - Wylie, M.T.

AU - Yang, G.

AU - Lee, S.L.

AU - Keller, H.

AU - Paul, D.M.

AU - Mook, H.A.

AU - Yethiraj, M.

AU - Kes, P.H.

AU - Li, T.W.

AU - Menovsky, A.A.

AU - Tarnawski, Z.

AU - Mortensen, K.

PY - 1994

Y1 - 1994

N2 - We have used neutron scattering to provide direct information about flux structures in the bulk of crystals of the superconductor Bi2Sr2CaCu2O8. Its extremely high effective mass anisotropy, makes the flux lattice susceptable to melting and also to decomposition into 'pancake' vortices, which would give a more two-dimensional vortex structure. At low temperatures and fields the scattered intensity is consistent with a three dimensional flux-line structure. At higher fields and temperatures, the scattering from the flux lattice dissapears well below T-c. We can associate this dissappearance with the above changes in the vortex structure. We compare the neutron scattering results with macroscopic measurements of magnetisation.

AB - We have used neutron scattering to provide direct information about flux structures in the bulk of crystals of the superconductor Bi2Sr2CaCu2O8. Its extremely high effective mass anisotropy, makes the flux lattice susceptable to melting and also to decomposition into 'pancake' vortices, which would give a more two-dimensional vortex structure. At low temperatures and fields the scattered intensity is consistent with a three dimensional flux-line structure. At higher fields and temperatures, the scattering from the flux lattice dissapears well below T-c. We can associate this dissappearance with the above changes in the vortex structure. We compare the neutron scattering results with macroscopic measurements of magnetisation.

KW - Materialer med særlige fysiske og kemiske egenskaber

U2 - 10.1016/0921-4534(94)92512-7

DO - 10.1016/0921-4534(94)92512-7

M3 - Journal article

SN - 0921-4534

VL - 235-240

SP - 2583

EP - 2584

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

ER -

Small angle neutron diffraction studies of vortex structures in high temperature superconductors

Abstract

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