About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Paper
Creation of a flux-free environment
Abstract
For the proper operation of flux sensitive cryogenic devices such as those in Josephson computers a nearly zero field environment is essential. Since shieldings based on ferromagnetic mu-metal has been found to be not effective enough, superconducting shieldings are required. In this paper flux penetration into superconducting disks of ideal and non-ideal shape is investigated with respect to flux free regions in the disk. Based on the experimental results of the linear dimension of flux free belts in disk shaped type-I superconductors an arrangement is proposed to create flux free regions large enough for practical applications. © 1981 IEEE