Magnetic-flux quanta in superconducting thin films observed by electron holography and digital phase analysis

1991 ◽  
Vol 43 (10) ◽  
pp. 7631-7650 ◽  
Author(s):  
Shuji Hasegawa ◽  
Tsuyoshi Matsuda ◽  
Junji Endo ◽  
Nobuyuki Osakabe ◽  
Masukazu Igarashi ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
Phase Analysis ◽  
Electron Holography ◽  
Superconducting Thin Films ◽  
Digital Phase

scholarly journals Influence of microscopic defects in type-II superconducting thin films on the magnetic flux penetration

2001 ◽  
Vol 64 (10) ◽  
Author(s):  
Johannes Eisenmenger ◽  
Paul Leiderer ◽  
Michael Wallenhorst ◽  
Horst Dötsch
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
Superconducting Thin Films ◽  
Type Ii ◽  
Flux Penetration

Magnetic Flux Penetration into Superconducting Thin Films

1972 ◽  
Vol 6 (7) ◽  
pp. 2579-2595 ◽  
Author(s):  
Gerald E. Peabody ◽  
R. Meservey
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
Superconducting Thin Films ◽  
Flux Penetration

Critical current and the spatial distribution of magnetic flux in superconducting thin films

1991 ◽  
Vol 175 (3-4) ◽  
pp. 363-368 ◽  
Author(s):  
L.T. Baczewski ◽  
K. Piotrowski ◽  
R. Szymczak ◽  
H. Szymczak ◽  
A.P. Malozemoff
Keyword(s):  
Thin Films ◽  
Spatial Distribution ◽  
Magnetic Flux ◽  
Critical Current ◽  
Superconducting Thin Films

Magnetic flux penetration and current density in superconducting thin films

1998 ◽  
Vol 294 (3-4) ◽  
pp. 233-242 ◽  
Author(s):  
C Ferdeghini ◽  
E Giannini ◽  
G Grassano ◽  
D Marré ◽  
I Pallecchi ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
Current Density ◽  
Superconducting Thin Films ◽  
Flux Penetration

Magnetic flux creep in YBa2Cu3O7−δ high-Tc superconducting thin films near the critical temperature

2006 ◽  
Vol 32 (3) ◽  
pp. 205-213 ◽  
Author(s):  
M. P. Chernomorets ◽  
D. G. Kovalchuk ◽  
S. M. Ryabchenko ◽  
A. V. Semenov
Keyword(s):  
Thin Films ◽  
Critical Temperature ◽  
Magnetic Flux ◽  
Flux Creep ◽  
Superconducting Thin Films ◽  
High Tc

scholarly journals Microwave heating-induced static magnetic flux penetration in YBa2Cu3O7–δ superconducting thin films

2012 ◽  
Vol 111 (12) ◽  
pp. 123911
Author(s):  
Julien Kermorvant ◽  
Jean-Claude Mage ◽  
Bruno Marcilhac ◽  
Yves Lemaître ◽  
Jean-François Bobo ◽  
...  
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
Microwave Heating ◽  
Superconducting Thin Films ◽  
Flux Penetration

Magnetic Flux Avalanches in Superconducting Films with Mesoscopic Artificial Patterns

2017 ◽  
Author(s):  
M. Motta ◽  
A.V. Silhanek ◽  
W.A. Ortiz
Keyword(s):  
Thin Films ◽  
Magnetic Flux ◽  
High Speed ◽  
Superconducting Films ◽  
Superconducting Thin Films ◽  
Pinning Centers ◽  
Artificial Pinning Centers ◽  
Lattice Symmetry ◽  
Thermally Driven ◽  
Flux Avalanches

This article examines the practical problem of thermally driven high-speed flux avalanches occurring in superconducting thin films with mesoscopic artificial patterns. The thin films are synthesized with artificial pins in the form of sub-micrometric antidots (ADs). The article first provides an overview of magnetic flux avalanches in superconductors, with particular emphasis on thermally driven avalanches, before discussing the occurrence and morphology of flux avalanches in superconducting thin films comprised of AD arrays. It analyses the influence of lattice symmetry and different AD geometries on the guidance and consequently the branching of flux avalanches. It also explores how artificial pinning centers inserted in superconducting films affect vortex dynamics.

scholarly journals Measurement of Electrical Properties of Superconducting YBCO Thin Films in the VHF Range

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3360
Author(s):  
Yakir Dahan ◽  
Eldad Holdengreber ◽  
Elichai Glassner ◽  
Oz Sorkin ◽  
Shmuel E. Schacham ◽  
...  
Keyword(s):  
Thin Films ◽  
Theoretical Model ◽  
Quality Factor ◽  
High Frequency ◽  
Unit Length ◽  
Superconducting Thin Films ◽  
Electrical Parameters ◽  
Very High Frequency ◽  
Production Constraints ◽  
Very High

A new measurement technique of electrical parameters of superconducting thin films at the Very High Frequency (VHF) range is described, based on resonators with microstrip (MS) structures. The design of an optimal resonator was achieved, based on a thorough theoretical analysis, which is required for derivation of the exact configuration of the MS. A theoretical model is presented, from which an expression for the attenuation of a MS line can be derived. Accordingly, simulations were performed, and an optimal resonator for the VHF range was designed and implemented. Production constraints of YBa2Cu3O7 (YBCO) limited the diameter of the sapphire substrate to 3″. Therefore, a meander configuration was formed to fit the long λ/4 MS line on the wafer. By measuring the complex input reflection coefficients of a λ/4 resonator, we extracted the quality factor, which is mainly affected by the dielectric and conductor attenuations. The experimental results are well fitted by the theoretical model. The dielectric attenuation was calculated using the quasi-static analysis of the MS line. An identical copper resonator was produced and measured to compare the properties of the YBCO resonator in reference to the copper one. A quality factor of ~6·105 was calculated for the YBCO resonator, three orders of magnitude larger than that of the copper resonator. The attenuation per unit length of the YBCO layer was smaller by more than five orders of magnitude than that of the copper.

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