Penetration of magnetic fields into superconductors III. Measurements on thin films of tin, lead and indium

Author:

Abstract

The magnetic moments of thin superconducting films of tin, lead and indium, obtained by evaporation of the metal in vacuo, have been measured by a ballistic method. Values of the penetration depth, λ 0 , at absolute zero, derived from them by extrapolation, are estimated as 5.0 ± 0.1 x 10 -6 cm. for tin, 3.9 ± 0.3 x 10 -6 cm. for lead, and 6.4 ± 0.3 cm. for indium. Within the limits of experimental error the results agree with the penetration law of London & London. From the areas of the magnetization curves, estimates of the difference in surface energy (α n – α 5 ) per unit area between free surfaces of the normal and superconducting phases respectively are derived, which are smaller than those previously assumed. No evidence is found for an increase in penetration depth at low temperatures and high fields such as that suggested by the theories of Heisenberg and Koppe.

Publisher

The Royal Society

Subject

Pharmacology (medical)

Reference18 articles.

1. J .Phys. U.S.S.R. 4 403.

2. Proc.Phys. Soc. A 62 88.

3. The Magnetization of Superconducting Plates in Transverse Magnetic Fields

4. Proc. Roy;Bristow J .;Soc. A,1939

Cited by 136 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3