Vortex imaging in superconducting films by Scanning Hall Probe Microscopy


Oral A. , BENDİNG S. J. , HUMPHREYS R. G. , HENİNİ M.

JOURNAL OF LOW TEMPERATURE PHYSICS, cilt.105, ss.1135-1140, 1996 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 105
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1007/bf00753852
  • Dergi Adı: JOURNAL OF LOW TEMPERATURE PHYSICS
  • Sayfa Sayıları: ss.1135-1140

Özet

We have used a low noise Scanning Hall Probe Microscope (SHPM) to study vortex structures in superconducting films. The microscope has high magnetic field (similar to 2.9 x 10(-8)T/root Hz at 77 K) and spatial resolution, similar to 0.85 mu m. Magnetic field profiles of single vortices in High T-c YBa2Cu3O7-delta thin films have been successfully measured and the microscopic penetration depth of the superconductor has been extracted as a function of temperature. Flux penetration into the superconductor has been imaged in real time (similar to 8s/frame).