Open AccessOptimum multilayer coating of superconducting particle accelerator cavities and effects of thickness dependent material properties of thin films
Author(s) -
Takayuki Kubo
Publication year - 2019
Publication title -
japanese journal of applied physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 129
eISSN - 1347-4065
pISSN - 0021-4922
DOI - 10.7567/1347-4065/ab2f0a
Subject(s) - superconductivity , materials science , london penetration depth , electrical resistivity and conductivity , penetration depth , penetration (warfare) , insulator (electricity) , critical field , coating , condensed matter physics , thin film , particle (ecology) , composite material , optics , nanotechnology , physics , oceanography , engineering , quantum mechanics , operations research , geology
We revisit the field limit of a superconductor–insulator–superconductor multilayer structure for particle accelerator cavities ( B ML ), taking into account thickness ( d )-dependent critical temperature, normal resistivity, and normal density of states seen in many thin films. Resultant d -dependent thermodynamic critical field and penetration depth lead to the appearance of a peak in B ML ( d ) which has been missed in the previous studies. The procedure shown in this note would be useful to evaluate B ML based on properties of one’s own films.