Multiple-gap structure of the binary superconductor MgB2

T. Takasaki; T. Ekino; T. Muranaka; H. Fujii; J. Akimitsu

doi:10.1016/S0921-4534(02)02688-6

Multiple-gap structure of the binary superconductor MgB₂

T. Takasaki, T. Ekino, T. Muranaka, H. Fujii, J. Akimitsu

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

Abstract

Electron-tunneling measurements on the superconductor MgB₂ with T_c = 39 K have been carried out using a break-junction technique. We have observed the double-gap structures with several combinations of the gap sizes. The largest Δ = 9 meV gap can be observed as a single gap, which gives very strong-coupling ratio 2Δ/k_BT_c = 5.3-5.7.

Original language	English
Pages (from-to)	147-148
Number of pages	2
Journal	Physica C: Superconductivity and its applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02688-6
Publication status	Published - May 2003
Externally published	Yes
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: Aug 20 2002 → Aug 27 2002

Keywords

Break junction
MgB
Multiple-gap structure
Tunneling spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(02)02688-6

Cite this

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title = "Multiple-gap structure of the binary superconductor MgB2",

abstract = "Electron-tunneling measurements on the superconductor MgB2 with Tc = 39 K have been carried out using a break-junction technique. We have observed the double-gap structures with several combinations of the gap sizes. The largest Δ = 9 meV gap can be observed as a single gap, which gives very strong-coupling ratio 2Δ/kBTc = 5.3-5.7.",

keywords = "Break junction, MgB, Multiple-gap structure, Tunneling spectroscopy",

author = "T. Takasaki and T. Ekino and T. Muranaka and H. Fujii and J. Akimitsu",

note = "Funding Information: This work is supported in part by a Grant-in-Aid for COE research (no. 13CE2002) of the Ministry of Education, Culture, Sports, Science and Technology of Japan.; proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

year = "2003",

month = may,

doi = "10.1016/S0921-4534(02)02688-6",

language = "English",

volume = "388-389",

pages = "147--148",

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

issn = "0921-4534",

publisher = "Elsevier",

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TY - JOUR

T1 - Multiple-gap structure of the binary superconductor MgB2

AU - Takasaki, T.

AU - Ekino, T.

AU - Muranaka, T.

AU - Fujii, H.

AU - Akimitsu, J.

N1 - Funding Information: This work is supported in part by a Grant-in-Aid for COE research (no. 13CE2002) of the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2003/5

Y1 - 2003/5

N2 - Electron-tunneling measurements on the superconductor MgB2 with Tc = 39 K have been carried out using a break-junction technique. We have observed the double-gap structures with several combinations of the gap sizes. The largest Δ = 9 meV gap can be observed as a single gap, which gives very strong-coupling ratio 2Δ/kBTc = 5.3-5.7.

AB - Electron-tunneling measurements on the superconductor MgB2 with Tc = 39 K have been carried out using a break-junction technique. We have observed the double-gap structures with several combinations of the gap sizes. The largest Δ = 9 meV gap can be observed as a single gap, which gives very strong-coupling ratio 2Δ/kBTc = 5.3-5.7.

KW - Break junction

KW - MgB

KW - Multiple-gap structure

KW - Tunneling spectroscopy

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U2 - 10.1016/S0921-4534(02)02688-6

DO - 10.1016/S0921-4534(02)02688-6

M3 - Conference article

AN - SCOPUS:0037513307

SN - 0921-4534

VL - 388-389

SP - 147

EP - 148

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002

ER -