Transverse-field components of the flux-line lattice in the anisotropic superconductor YBa2Cu3O7−δ

P. G. Kealey; D. Charalambous; E. M. Forgan; S. L. Lee; S. T. Johnson; P. Schleger; R. Cubitt; D. McK. Paul; C. M. Aegerter; S. Tajima; A. Rykov

doi:10.1103/PhysRevB.64.174501

Transverse-field components of the flux-line lattice in the anisotropic superconductor YBa2Cu3O7−δ

P. G. Kealey, D. Charalambous, E. M. Forgan, S. L. Lee, S. T. Johnson, P. Schleger, R. Cubitt, D. McK. Paul, C. M. Aegerter, S. Tajima, A. Rykov

DOI 10.1103/PhysRevB.64.174501 · Physical Review B

T1

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Abstract

We report on detailed small-angle neutron scattering measurements with polarization analysis from the flux-line lattice in the anisotropic superconductor YBa2Cu3O7−δ. When the field was applied at an angle to the principal axes we have observed spin-flip neutron diffraction consistent with local transverse field components. From a detailed study of the angle dependence of the magnitude of the spin-flip neutron-scattered intensity we have found that the transverse-field components are larger than predicted by an anisotropic London model for reasonable mass anisotropy values. The transverse-field components are consistent with a reduced c-axis coherence length at low temperature.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown