High--$T_c$ RF SQUIDs with Large Inductance of Quantization Loop

A. V. Sermyagin

doi:10.1016/j.physc.2003.10.009

paper

High-- $T_{c}$ RF SQUIDs with Large Inductance of Quantization Loop

arXiv:cond-mat/0305046 · doi:10.1016/j.physc.2003.10.009

Abstract

Experimental data on signal and noise characteristics of high-- $T_{c}$ RF SQUIDs with large inductance of quantization loop are presented. The SQUIDs were produced by a thick--film HTS--technique of painting on the Y $_{2}$ BaCuO $_{5}$ substrate. For the first time, a steady quantum interference was observed in RF SQUID with the inductance as large as $L_{S} = 6.6$ nH, that is, 60 times higher than the fluctuation inductance $L_{F} ≃ 1 0^{- 10} H$ at the liquid nitrogen temperature T=77 K. A new method is offered to evaluate the sensitivity of RF SQUID with optimum inductance of the quantization loop.

12 pages, 4 figures, 1 table

High--Tc​ RF SQUIDs with Large Inductance of Quantization Loop

Abstract

High-- $T_{c}$ RF SQUIDs with Large Inductance of Quantization Loop