Transport and magnetic properties of a superconducting closed loop containing a thin-film quantum interferometer
S.I. Bondarenko, V.P. Koverya, and A.V. Krevsun
B.Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine,47 Nauky Ave., Kharkiv 61103, Ukraine
Received October 29, 2019, published online February 28, 2020
The current in a superconducting closed loop containing a thin-film interferometer with two point contacts (two Josephson-type weak links) has been measured as a function of the transport current and external magnetic field applied to interferometer. The differences between the transport and magnetic dependences of the system under study and similar characteristics for a superconducting closed loop containing an interferometer in the form of a single pressed point contact are discussed.
Key words: superconducting quantum interferometer, superconducting closed loop with an interferometer, critical current, magnetic field, magnetic flux quantization, diamagnetic current, transport current.