Magnetoresistance anisotropy in amorphous superconducting thin films: Site-bond percolation approach

Elkana Porat, Yigal Meir

Research output: Contribution to journalArticlepeer-review


Recent measurements of the magnetoresistance (MR) of amorphous superconducting thin films in tilted magnetic fields have displayed several surprising experimental details, in particular, a strong dependence of the MR on the field angle at low magnetic fields, which diminishes and then changes sign at large fields. Using a generalized site-bond percolation model, which takes into account both orbital and Zeeman effects of the magnetic field, we show that the resulting MR curves reproduce the main experimental features. Such measurements, accompanied by the corresponding theory, may be crucial in pinpointing the correct theory of the superconductor-insulator transition and of the MR peak in thin disordered films.

Original languageEnglish
Article number024509
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number2
StatePublished - 13 Jul 2015

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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