Magnetoresistance Anisotropy in Amorphous Superconducting Thin Films: A Site-Bond Percolation Approach

Abstract

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 field angle at low magnetic fields, which diminishes and then changes sign at large fields. Using a generalized site-bond percolation model, that takes into account both the 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.

arXiv comment5 pages, 4 figures

References in corpus (17)

• Nature of the superconductor-insulator transition in disordered superconductors
• Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
• Role of Spatial Amplitude Fluctuations in Highly Disordered s-Wave Superconductors
• Dissipation effects on the superconductor-insulator transition in 2-D superconductors
• Superconductivity-Related Insulating Behavior
• Transport Through Quantum Melts
• Thickness-Magnetic Field Phase Diagram at the Superconductor-Insulator Transition in 2D
• Disorder and Quantum Fluctuations in Superconducting Films in Strong Magnetic Fields
• The approach to a superconductor-to-Bose-insulator transition in disordered films
• Emergence of nanoscale inhomogeneity in the superconducting state of a homogeneously disordered conventional superconductor, NbN
• Vortices and quasiparticles near the "superconductor-insulator" transition in thin films
• True Superconductivity in a 2D "Superconducting-Insulating" System
• Theory of Magneto-resistance of Disordered Superconducting Films
• Scale dependent superconductor-insulator transition
• Island formation in disordered superconducting thin films at finite magnetic fields
• Magnetic field tuned superconductor-to-insulator transition at the LaAlO${}_3$ /SrTiO${}_3$ interface
• Angular dependence of the magnetic-field driven superconductor-insulator transition in thin films of amorphous indium-oxide

Cited by in corpus (2)

• Integrating superconducting van der Waals materials on paper substrates
• Percolative supercurrent in superconductor-ferromagnetic insulator bilayers