Polarised neutron reflectometry studies of flux penetration in superconducting Nb

J. M. Reynolds, V. Nunez, A. T. Boothroyd, R. Somekh, D. G. Bucknall, S. Langridge

Research output: Contribution to journalArticlepeer-review

Abstract

We have applied the technique of polarised neutron reflectometry (PNR) to investigate the magnetic field penetration in different superconducting phases of Nb, namely the Meissner state (H < Hc1), the mixed state (Hc1 < H < Hc2) and the surface superconductivity state (Hc2 < H < Hc3) around 4 K. The sample was a sputtered film of Nb with a 3 μm thickness on a 5 mm Si crystal substrate. The measurements were carried out on the CRISP reflectometer at the ISIS facility, with field strengths between 400 and 4500 Oe. We present preliminary data for the spin-dependent reflectivity as a function of applied field.

Original languageEnglish
Pages (from-to)1104-1106
Number of pages3
JournalPhysica B: Condensed Matter
Volume241-243
DOIs
Publication statusPublished - Dec 1997

Keywords

  • Niobium
  • Polarized neutrons
  • Reflectometry
  • Surface superconductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Polarised neutron reflectometry studies of flux penetration in superconducting Nb'. Together they form a unique fingerprint.

Cite this