Anisotropic upper critical field of LuNi2B2C

V. Metlushko, U. Welp, A. Koshelev, Igor Aronson, G. W. Crabtree, P. C. Canfield

Research output: Contribution to journalArticlepeer-review

113 Scopus citations

Abstract

The upper critical field, Hc2, of LuNi2B2C has been determined from the temperature dependence of the magnetization. A temperature dependent anisotropy within the basal plane which decreases from a value of 1.1 at 4.5 K to a value of 1.0 at Tc and an almost temperature independent out-of-plane anisotropy have been observed. Near Tc the upper critical field along all directions shows a strong upward curvature. These features of Hc2 can be explained quantitatively using a nonlocal extension of the Ginzburg-Landau equations. The Fermi velocity averages determined from these measurements and those obtained in band structure calculations are in good agreement. 1997

Original languageEnglish (US)
Pages (from-to)1738-1741
Number of pages4
JournalPhysical Review Letters
Volume79
Issue number9
DOIs
StatePublished - Jan 1 1997

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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