Quantum Oscillations of the Critical Current of Asymmetric Aluminum Loops in Magnetic Field

摘要

The periodical dependencies in magnetic field of the asymmetry of the current-voltage curves of asymmetric aluminum loop are investigated experimentally at different temperatures below the transition into the superconducting state T < T_(c). The obtained periodical dependency of the critical current on magnetic field allows to explain the quantum oscillations of the dc voltage as a consequence of the rectification of the external ac current and to calculate the persistent current at different values of magnetic flux inside the loop and temperatures.