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Title: Campbell response in type-II superconductors under strong pinning conditions

Abstract

Measuring the ac magnetic response of a type II superconductor provides valuable information on the pinning landscape (pinscape) of the material. We use strong pinning theory to derive a microscopic expression for the Campbell length λC, the penetration depth of the ac signal. We show that λC is determined by the jump in the pinning force, in contrast to the critical current jc, which involves the jump in pinning energy. We demonstrate that the Campbell lengths generically differ for zero-field-cooled and field-cooled samples and predict that hysteretic behavior can appear in the latter situation. As a result, we compare our findings with new experimental data and show the potential of this technique in providing information on the material’s pinscape.

Authors:
 [1];  [1];  [2];  [1]
  1. ETH Zurich, Zurich (Switzerland)
  2. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234456
Alternate Identifier(s):
OSTI ID: 1225762
Report Number(s):
IS-J-8860
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 20; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Willa, R., Geshkenbein, V. B., Prozorov, R., and Blatter, G. Campbell response in type-II superconductors under strong pinning conditions. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.115.207001.
Willa, R., Geshkenbein, V. B., Prozorov, R., & Blatter, G. Campbell response in type-II superconductors under strong pinning conditions. United States. https://doi.org/10.1103/PhysRevLett.115.207001
Willa, R., Geshkenbein, V. B., Prozorov, R., and Blatter, G. Wed . "Campbell response in type-II superconductors under strong pinning conditions". United States. https://doi.org/10.1103/PhysRevLett.115.207001. https://www.osti.gov/servlets/purl/1234456.
@article{osti_1234456,
title = {Campbell response in type-II superconductors under strong pinning conditions},
author = {Willa, R. and Geshkenbein, V. B. and Prozorov, R. and Blatter, G.},
abstractNote = {Measuring the ac magnetic response of a type II superconductor provides valuable information on the pinning landscape (pinscape) of the material. We use strong pinning theory to derive a microscopic expression for the Campbell length λC, the penetration depth of the ac signal. We show that λC is determined by the jump in the pinning force, in contrast to the critical current jc, which involves the jump in pinning energy. We demonstrate that the Campbell lengths generically differ for zero-field-cooled and field-cooled samples and predict that hysteretic behavior can appear in the latter situation. As a result, we compare our findings with new experimental data and show the potential of this technique in providing information on the material’s pinscape.},
doi = {10.1103/PhysRevLett.115.207001},
journal = {Physical Review Letters},
number = 20,
volume = 115,
place = {United States},
year = {Wed Nov 11 00:00:00 EST 2015},
month = {Wed Nov 11 00:00:00 EST 2015}
}

Journal Article:

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Cited by: 13 works
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Works referencing / citing this record:

Tunnel diode resonator for precision magnetic susceptibility measurements in a mK temperature range and large DC magnetic fields
journal, September 2018

  • Kim, Hyunsoo; Tanatar, M. A.; Prozorov, R.
  • Review of Scientific Instruments, Vol. 89, Issue 9
  • DOI: 10.1063/1.5048008

Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors
journal, November 2017

  • Willa, R.; Koshelev, A. E.; Sadovskyy, I. A.
  • Superconductor Science and Technology, Vol. 31, Issue 1
  • DOI: 10.1088/1361-6668/aa939e

Thermal creep induced by cooling a superconducting vortex lattice
journal, February 2020


Thermal creep induced by cooling a superconducting vortex lattice
text, January 2020


Probing the pinning landscape in type-II superconductors via Campbell penetration depth
text, January 2015


Strong-pinning regimes by spherical inclusions in anisotropic type-II superconductors
text, January 2017


Strong pinning theory of thermal vortex creep in type II superconductors
text, January 2019