Inclined-field structure, morphology, and pinning of the vortex lattice in microtwinned YBa2Cu3O7

B. Keimer, F. Doǧan, Ilhan A. Aksay, R. W. Erwin, J. W. Lynn, M. Sarikaya

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Abstract

A detailed small-angle neutron scattering study of the vortex lattice in a single crystal of YBa2Cu3O7 was made for a field of 0.5 tesla inclined at angles between 0 and 80 degrees to the crystalline c axis. The vortex lattice is triangular for all angles, and for angles less than or equal to 70 degrees its orientation adjusts itself to maximize the pinning energy to densely and highly regularly spaced twin planes. These observations have important implications for the microscopic flux-pinning mechanism, and hence for the critical current achievable in YBa2Cu3O7. For large angles (about 80 degrees) the vortex lattice consists of independent chains in the orientation predicted by anisotropic London theory.

Original languageEnglish (US)
Pages (from-to)83-86
Number of pages4
JournalScience
Volume262
Issue number5130
DOIs
StatePublished - 1993

All Science Journal Classification (ASJC) codes

  • General

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    Keimer, B., Doǧan, F., Aksay, I. A., Erwin, R. W., Lynn, J. W., & Sarikaya, M. (1993). Inclined-field structure, morphology, and pinning of the vortex lattice in microtwinned YBa2Cu3O7. Science, 262(5130), 83-86. https://doi.org/10.1126/science.262.5130.83