Anisotropic behaviour of transmission through thin superconducting NbN film in parallel magnetic field

Abstract

Transmission of terahertz waves through a thin layer of the superconductor NbN deposited on an anisotropic R-cut sapphire substrate is studied as a function of temperature in a magnetic field oriented parallel with the sample. A significant difference is found between transmitted intensities of beams linearly polarised parallel with and perpendicular to the direction of applied magnetic field.

Keywords

• Far-infrared transmission
• NbN
• Superconducting film
• Vortices
• Terahertz waves
• Parallel magnetic field