Giant flux jumps through a thin superconducting nb film in a vortex free region

M. I. Tsindlekht; V. M. Genkin; I. Felner; F. Zeides; N. Katz; Gazi; Chromik

doi:10.1016/j.physc.2016.08.005

Giant flux jumps through a thin superconducting nb film in a vortex free region

M. I. Tsindlekht^*
, V. M. Genkin
, I. Felner
, F. Zeides
, N. Katz
, Gazi
, Chromik

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We measure the dynamics of magnetic field penetration into thin-walled superconducting niobium cylinders. It is shown that magnetic field penetrates through the wall of a cylinder in a series of giant jumps with amplitude 1 - 2 mT and duration of less than a microsecond in a wide range of magnetic fields, including the vortex free region. Surprisingly, the jumps take place when the total current in the wall, not the current density, exceeds a critical value. In addition, there are small jumps and/or smooth penetration, but their contribution reaches only ≃ 20 % of the total penetrating flux. The number of jumps decreases with increased temperature. Thermomagnetic instabilities cannot explain the experimental observations.

Original language	English
Pages (from-to)	1-7
Number of pages	7
Journal	Physica C: Superconductivity and its Applications
Volume	529
DOIs	https://doi.org/10.1016/j.physc.2016.08.005
State	Published - 15 Oct 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V.

Keywords

Flux jumps
Superconductivity
Thin-walled cylinders

Access to Document

10.1016/j.physc.2016.08.005

Cite this

@article{88c88db80707418186ae3b249c535ec1,

title = "Giant flux jumps through a thin superconducting nb film in a vortex free region",

abstract = "We measure the dynamics of magnetic field penetration into thin-walled superconducting niobium cylinders. It is shown that magnetic field penetrates through the wall of a cylinder in a series of giant jumps with amplitude 1 - 2 mT and duration of less than a microsecond in a wide range of magnetic fields, including the vortex free region. Surprisingly, the jumps take place when the total current in the wall, not the current density, exceeds a critical value. In addition, there are small jumps and/or smooth penetration, but their contribution reaches only ≃ 20 \% of the total penetrating flux. The number of jumps decreases with increased temperature. Thermomagnetic instabilities cannot explain the experimental observations.",

keywords = "Flux jumps, Superconductivity, Thin-walled cylinders",

author = "Tsindlekht, \{M. I.\} and Genkin, \{V. M.\} and I. Felner and F. Zeides and N. Katz and Gazi and Chromik",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2016",

month = oct,

day = "15",

doi = "10.1016/j.physc.2016.08.005",

language = "אנגלית",

volume = "529",

pages = "1--7",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Giant flux jumps through a thin superconducting nb film in a vortex free region

AU - Tsindlekht, M. I.

AU - Genkin, V. M.

AU - Felner, I.

AU - Zeides, F.

AU - Katz, N.

AU - Gazi,

AU - Chromik,

PY - 2016/10/15

Y1 - 2016/10/15

N2 - We measure the dynamics of magnetic field penetration into thin-walled superconducting niobium cylinders. It is shown that magnetic field penetrates through the wall of a cylinder in a series of giant jumps with amplitude 1 - 2 mT and duration of less than a microsecond in a wide range of magnetic fields, including the vortex free region. Surprisingly, the jumps take place when the total current in the wall, not the current density, exceeds a critical value. In addition, there are small jumps and/or smooth penetration, but their contribution reaches only ≃ 20 % of the total penetrating flux. The number of jumps decreases with increased temperature. Thermomagnetic instabilities cannot explain the experimental observations.

AB - We measure the dynamics of magnetic field penetration into thin-walled superconducting niobium cylinders. It is shown that magnetic field penetrates through the wall of a cylinder in a series of giant jumps with amplitude 1 - 2 mT and duration of less than a microsecond in a wide range of magnetic fields, including the vortex free region. Surprisingly, the jumps take place when the total current in the wall, not the current density, exceeds a critical value. In addition, there are small jumps and/or smooth penetration, but their contribution reaches only ≃ 20 % of the total penetrating flux. The number of jumps decreases with increased temperature. Thermomagnetic instabilities cannot explain the experimental observations.

KW - Flux jumps

KW - Superconductivity

KW - Thin-walled cylinders

UR - https://www.scopus.com/pages/publications/84981555979

U2 - 10.1016/j.physc.2016.08.005

DO - 10.1016/j.physc.2016.08.005

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:84981555979

SN - 0921-4534

VL - 529

SP - 1

EP - 7

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

ER -

Giant flux jumps through a thin superconducting nb film in a vortex free region

Abstract

Bibliographical note

Keywords

Access to Document

Other files and links

Fingerprint

Cite this