Physica C: Superconductivity and its Applications, volume 385, issue 1-2, pages 205-214

Magnetic penetration depth of MgB2

Publication typeJournal Article
Publication date2003-03-01
Quartile SCImago
Q2
Quartile WOS
Q3
Impact factor1.7
ISSN09214534
Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering
Energy Engineering and Power Technology
Abstract
The low temperature behaviour of the magnetic penetration depth λ(T) provides a useful probe of the low lying excitations in superconductors and hence of the anisotropy of the superconducting energy gap. In this paper, we will present measurements of the penetration depth in the Meissner state of both single crystal and polycrystalline samples of MgB2, using a very low field RF technique. λ(T) shows a clear exponential temperature dependence T/Tc≲0.2, strongly indicating that this material is fully gapped. Detailed fits to the superfluid density over the full temperature range of our measurements (1>T/Tc>0.04) gives strong support for the existence of two distinct superconducting gaps, Δs=29 K and Δb=75 K, in agreement with recent theoretical predictions and other probes.

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Carrington A., MANZANO F. Magnetic penetration depth of MgB2 // Physica C: Superconductivity and its Applications. 2003. Vol. 385. No. 1-2. pp. 205-214.
GOST all authors (up to 50) Copy
Carrington A., MANZANO F. Magnetic penetration depth of MgB2 // Physica C: Superconductivity and its Applications. 2003. Vol. 385. No. 1-2. pp. 205-214.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/S0921-4534(02)02319-5
UR - https://doi.org/10.1016/S0921-4534(02)02319-5
TI - Magnetic penetration depth of MgB2
T2 - Physica C: Superconductivity and its Applications
AU - Carrington, A.
AU - MANZANO, F.
PY - 2003
DA - 2003/03/01
PB - Elsevier
SP - 205-214
IS - 1-2
VL - 385
SN - 0921-4534
ER -
BibTex |
Cite this
BibTex Copy
@article{2003_Carrington,
author = {A. Carrington and F. MANZANO},
title = {Magnetic penetration depth of MgB2},
journal = {Physica C: Superconductivity and its Applications},
year = {2003},
volume = {385},
publisher = {Elsevier},
month = {mar},
url = {https://doi.org/10.1016/S0921-4534(02)02319-5},
number = {1-2},
pages = {205--214},
doi = {10.1016/S0921-4534(02)02319-5}
}
MLA
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MLA Copy
Carrington, A., and F. MANZANO. “Magnetic penetration depth of MgB2.” Physica C: Superconductivity and its Applications, vol. 385, no. 1-2, Mar. 2003, pp. 205-214. https://doi.org/10.1016/S0921-4534(02)02319-5.
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