Superconductivity in YBa2Cu3O7 single crystals

Lynn Schneemeyer, J. V. Waszczak, T. Siegrist, R. B. Van Dover, L. W. Rupp, B. Batlogg, R. J. Cava, D. W. Murphy

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Abstract

Increased understanding of fundamental properties of the new cuprate superconductors depends on advances in the preparation of quality materials for study. Early work focused on the study of sintered polycrystalline samples. In some cases, grain growth during sintering yielded individual grains large enough (~80 μm) for single crystal X-ray determination1. Larger single crystals allow measurements of physical properties including measurements of anisotropic behaviour. The anisotropy of upper critical fields in YBa 2Cu3O7 single crystals has been reported by lye et al.2 who found critical fields characteristic of a quasi-two-dimensional superconductor, which are highest when the field is orientated perpendicular to the c-axis. Dinger et al.3 have measured critical fields and critical currents of single crystals and find anisotropies of 10 and greater3. These studies contain little detail on the crystal growth of YBa2Cu3O7. Here we report the growth of single crystals as large as 4 mm of YBa2Cu 3O7 and DyBa2Cu3O7 and confirm superconductivity in them by magnetic and electrical measurements. Single crystals of other rare earth barium cuprates are also obtained although we have yet to optimize growth conditions for these phases.

Original languageEnglish
Pages (from-to)601-603
Number of pages3
JournalNature
Volume328
Issue number6131
StatePublished - 1 Dec 1988

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Anisotropy
Crystallization
Lye
Barium
Growth
X-Rays
barium copper yttrium oxide
Superconductivity

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Schneemeyer, L., Waszczak, J. V., Siegrist, T., Van Dover, R. B., Rupp, L. W., Batlogg, B., ... Murphy, D. W. (1988). Superconductivity in YBa2Cu3O7 single crystals. Nature, 328(6131), 601-603.
Schneemeyer, Lynn ; Waszczak, J. V. ; Siegrist, T. ; Van Dover, R. B. ; Rupp, L. W. ; Batlogg, B. ; Cava, R. J. ; Murphy, D. W. / Superconductivity in YBa2Cu3O7 single crystals. In: Nature. 1988 ; Vol. 328, No. 6131. pp. 601-603.
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Schneemeyer, L, Waszczak, JV, Siegrist, T, Van Dover, RB, Rupp, LW, Batlogg, B, Cava, RJ & Murphy, DW 1988, 'Superconductivity in YBa2Cu3O7 single crystals', Nature, vol. 328, no. 6131, pp. 601-603.

Superconductivity in YBa2Cu3O7 single crystals. / Schneemeyer, Lynn; Waszczak, J. V.; Siegrist, T.; Van Dover, R. B.; Rupp, L. W.; Batlogg, B.; Cava, R. J.; Murphy, D. W.

In: Nature, Vol. 328, No. 6131, 01.12.1988, p. 601-603.

Research output: Contribution to journalArticle

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Schneemeyer L, Waszczak JV, Siegrist T, Van Dover RB, Rupp LW, Batlogg B et al. Superconductivity in YBa2Cu3O7 single crystals. Nature. 1988 Dec 1;328(6131):601-603.