Magnetic Field Splitting of the Quasiparticle States in Superconducting Aluminum Films

Abstract
Magnetic field splitting of the quasiparticle energy states in superconducting aluminum films has been observed in a tunneling experiment. The magnitude of the splitting was found to be 2μH, and is attributed to the magnetic moment of the quasiparticles. The observed tunneling conductance is in qualitative agreement with theory.