Observation of vortex lattice melting in large untwinned YBa$_2$Cu$_3$O$_{7-x}$ single crystals

C. M. Aegerter; H. Keller; S. H. Lloyd; P. G. Kealey; E. M. Forgan; S. T. Johnson; T. M. Riseman; R. Cubitt; S. L. Lee; C. Ager; D. McK. Paul; I. M. Savic; M. Yethiraj; S. Tajima; A. Rykov

arXiv · cond-mat/0305593

Observation of vortex lattice melting in large untwinned YBa$_2$Cu$_3$O$_{7-x}$ single crystals

C. M. Aegerter·H. Keller·S. H. Lloyd·P. G. Kealey·E. M. Forgan·S. T. Johnson·T. M. Riseman·R. Cubitt·S. L. Lee·C. Ager·D. McK. Paul·I. M. Savic·M. Yethiraj·S. Tajima·A. Rykov

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Abstract

We present a study of the vortex lattice in untwinned YBa$_2$Cu$_3$O$_{7-x}$ crystals, using a combination of muon spin rotation and neutron small angle scattering measurements. Both methods show a very sharp melting temperature consistent with a first order transition. The dependence of the melting temperature on the angle of the field with respect to the crystallographic c-axis is studied. The results are compared to thermal measurements.

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C. M. Aegerter, H. Keller, S. H. Lloyd, P. G. Kealey, E. M. Forgan, S. T. Johnson, T. M. Riseman, R. Cubitt, S. L. Lee, C. Ager, D. McK. Paul, I. M. Savic, M. Yethiraj, S. Tajima, A. Rykov. 2003-05-26. Observation of vortex lattice melting in large untwinned YBa$_2$Cu$_3$O$_{7-x}$ single crystals. https://arxiv.org/abs/cond-mat/0305593

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