The effect of superconducting ground plane on microwave characteristics of unpatterned superconducting films in the mixed state

Chien-Jang Wu, M. H. Tsai, H. D. Yang, Yu Sheng Tsai

研究成果: 雜誌貢獻文章

摘要

The microwave characteristics of a multilayer structure made of a type-II superconducting thin film and a dielectric substrate together with a superconducting ground plane is studied theoretically by using the model of the self-consistent treatment of vortex dynamics. The dependence of reflection coefficient on the temperature and static magnetic field is reduced owing to the existence of the superconducting ground plane, especially at temperatures near Tc and at higher fields. Comparison of the interesting oscillation phenomenon in the associated effective surface resistance between the Meissner state (b - 0) and mixed state (b ≠ 0) is made. We find that the superconducting ground plane not only strongly narrows down the resonant peak shape but also enhances the peak height. Finally, a similar layered structure made of a superconducting thin film on a dielectric substrate shielded by a buffer layer is also considered. We specifically demonstrate that the buffer layer has essentially no substantial influence on microwave reflectance, transmittance, and complex surface impedance. The role played by the buffer layer is in great contrast to that in a planar transmission line.

原文英語
頁(從 - 到)192-202
頁數11
期刊IEEE Transactions on Applied Superconductivity
8
發行號4
DOIs
出版狀態已發佈 - 1998 十二月 1

指紋

Superconducting films
superconducting films
Buffer layers
buffers
Microwaves
microwaves
reflectance
Surface resistance
Substrates
thin films
laminates
transmission lines
Electric lines
transmittance
Multilayers
Vortex flow
impedance
vortices
Magnetic fields
Temperature

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

引用此文

The effect of superconducting ground plane on microwave characteristics of unpatterned superconducting films in the mixed state. / Wu, Chien-Jang; Tsai, M. H.; Yang, H. D.; Tsai, Yu Sheng.

於: IEEE Transactions on Applied Superconductivity, 卷 8, 編號 4, 01.12.1998, p. 192-202.

研究成果: 雜誌貢獻文章

@article{a62d31f1acce467391b3fbd3f86050d8,
title = "The effect of superconducting ground plane on microwave characteristics of unpatterned superconducting films in the mixed state",
abstract = "The microwave characteristics of a multilayer structure made of a type-II superconducting thin film and a dielectric substrate together with a superconducting ground plane is studied theoretically by using the model of the self-consistent treatment of vortex dynamics. The dependence of reflection coefficient on the temperature and static magnetic field is reduced owing to the existence of the superconducting ground plane, especially at temperatures near Tc and at higher fields. Comparison of the interesting oscillation phenomenon in the associated effective surface resistance between the Meissner state (b - 0) and mixed state (b ≠ 0) is made. We find that the superconducting ground plane not only strongly narrows down the resonant peak shape but also enhances the peak height. Finally, a similar layered structure made of a superconducting thin film on a dielectric substrate shielded by a buffer layer is also considered. We specifically demonstrate that the buffer layer has essentially no substantial influence on microwave reflectance, transmittance, and complex surface impedance. The role played by the buffer layer is in great contrast to that in a planar transmission line.",
keywords = "Microwave, Mixed state, Multilayer, Superconducting films",
author = "Chien-Jang Wu and Tsai, {M. H.} and Yang, {H. D.} and Tsai, {Yu Sheng}",
year = "1998",
month = "12",
day = "1",
doi = "10.1109/77.740685",
language = "English",
volume = "8",
pages = "192--202",
journal = "IEEE Transactions on Applied Superconductivity",
issn = "1051-8223",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "4",

}

TY - JOUR

T1 - The effect of superconducting ground plane on microwave characteristics of unpatterned superconducting films in the mixed state

AU - Wu, Chien-Jang

AU - Tsai, M. H.

AU - Yang, H. D.

AU - Tsai, Yu Sheng

PY - 1998/12/1

Y1 - 1998/12/1

N2 - The microwave characteristics of a multilayer structure made of a type-II superconducting thin film and a dielectric substrate together with a superconducting ground plane is studied theoretically by using the model of the self-consistent treatment of vortex dynamics. The dependence of reflection coefficient on the temperature and static magnetic field is reduced owing to the existence of the superconducting ground plane, especially at temperatures near Tc and at higher fields. Comparison of the interesting oscillation phenomenon in the associated effective surface resistance between the Meissner state (b - 0) and mixed state (b ≠ 0) is made. We find that the superconducting ground plane not only strongly narrows down the resonant peak shape but also enhances the peak height. Finally, a similar layered structure made of a superconducting thin film on a dielectric substrate shielded by a buffer layer is also considered. We specifically demonstrate that the buffer layer has essentially no substantial influence on microwave reflectance, transmittance, and complex surface impedance. The role played by the buffer layer is in great contrast to that in a planar transmission line.

AB - The microwave characteristics of a multilayer structure made of a type-II superconducting thin film and a dielectric substrate together with a superconducting ground plane is studied theoretically by using the model of the self-consistent treatment of vortex dynamics. The dependence of reflection coefficient on the temperature and static magnetic field is reduced owing to the existence of the superconducting ground plane, especially at temperatures near Tc and at higher fields. Comparison of the interesting oscillation phenomenon in the associated effective surface resistance between the Meissner state (b - 0) and mixed state (b ≠ 0) is made. We find that the superconducting ground plane not only strongly narrows down the resonant peak shape but also enhances the peak height. Finally, a similar layered structure made of a superconducting thin film on a dielectric substrate shielded by a buffer layer is also considered. We specifically demonstrate that the buffer layer has essentially no substantial influence on microwave reflectance, transmittance, and complex surface impedance. The role played by the buffer layer is in great contrast to that in a planar transmission line.

KW - Microwave

KW - Mixed state

KW - Multilayer

KW - Superconducting films

UR - http://www.scopus.com/inward/record.url?scp=0032300979&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032300979&partnerID=8YFLogxK

U2 - 10.1109/77.740685

DO - 10.1109/77.740685

M3 - Article

AN - SCOPUS:0032300979

VL - 8

SP - 192

EP - 202

JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

SN - 1051-8223

IS - 4

ER -