ABSTRACT
V.I.Shnyrkov Institute for Low Temperature Physics and Engineering, Academy of Sciences,
Kharkov, Ukraine
7.1IIMTRODUCTION
Superconducting quantum interference devices (SQUIDs) are extraordinarily sensitive detectors of magnetic flux variations. These devices have numerous applications as sensors in a wide range of experiments in the fields of physics, geology, medicine, biology, and industry. The progress in technology and in understanding the origin of the noise in low-transition-temperature (Tc) SQUIDs brought a dramatic improvement in the resolution of electrical and magnetic measurements. Many rather new and nonstandard applications of SQUIDs have been reviewed in detail; see reviews and contributions in Refs. 1 and 2.
