Patent ID: 8405390

Claim:
A device comprising a magneto-resistive mixed sensor with at least one superconducting loop containing at least first and second constrictions arranged in parallel and first and second magneto-resistive elements respectively located next to said first and second constrictions, characterized by at least first and second heating elements respectively associated with said first and second constrictions that allow switching at sufficiently high frequency of each of said first and second constrictions of said superconducting loop above its critical temperature, such that a super-current flowing through one of said first and second constrictions located next to a respective one of said first and second magneto-resistive elements is temporarily suppressed, so that a super-current of the magneto-resistive mixed sensor is deviated from one of said first and second constrictions to the other of said first and second constrictions at a frequency at least twice a maximal frequency of a measured signal.