Tunneling spectroscopy of MgB2 and Li0.5(THF)yHfNCl

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

doi:10.1016/S0921-4526(02)01801-X

Tunneling spectroscopy of MgB₂ and Li_0.5(THF)_yHfNCl

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

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

36 Citations (Scopus)

Abstract

Break-junction tunneling spectra have been measured on MgB₂ and Li_0.5(THF)_yHfNCl to investigate the nature of the superconducting gap. The observed largest gap values at 4 K are 2Δ = 18-20 and 11-12meV for MgB₂ (T_c = 39 K) and Li_0.5(THF)_yHfNCl (26 K), respectively. These values lead to the similar ratio 2Δ/k_BT_c = 5-6, which is extremely large in comparison with that of the conventional strong-coupling superconductors.

Original language	English
Pages (from-to)	23-25
Number of pages	3
Journal	Physica B: Condensed Matter
Volume	328
Issue number	1-2
DOIs	https://doi.org/10.1016/S0921-4526(02)01801-X
Publication status	Published - Apr 2003
Externally published	Yes
Event	T2PAM - Higashi-Hiroshima, Japan Duration: Aug 16 2002 → Aug 19 2002

Keywords

Break junction
Energy gap
Li(THF)HfNCl
MgB
Superconductivity
Tunneling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4526(02)01801-X

Cite this

@article{01796f66262f4f1fb66020bfecda4a1e,

title = "Tunneling spectroscopy of MgB2 and Li0.5(THF)yHfNCl",

abstract = "Break-junction tunneling spectra have been measured on MgB2 and Li0.5(THF)yHfNCl to investigate the nature of the superconducting gap. The observed largest gap values at 4 K are 2Δ = 18-20 and 11-12meV for MgB2 (Tc = 39 K) and Li0.5(THF)yHfNCl (26 K), respectively. These values lead to the similar ratio 2Δ/kBTc = 5-6, which is extremely large in comparison with that of the conventional strong-coupling superconductors.",

keywords = "Break junction, Energy gap, Li(THF)HfNCl, MgB, Superconductivity, Tunneling",

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

note = "Funding Information: This work is supported by a Grant-in-Aid for COE research (No. 13CE2002) of the Ministry of Education, Culture, Sports, Science and Technology of Japan. ; T2PAM ; Conference date: 16-08-2002 Through 19-08-2002",

year = "2003",

month = apr,

doi = "10.1016/S0921-4526(02)01801-X",

language = "English",

volume = "328",

pages = "23--25",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Tunneling spectroscopy of MgB2 and Li0.5(THF)yHfNCl

AU - Ekino, T.

AU - Takasaki, T.

AU - Muranaka, T.

AU - Fujii, H.

AU - Akimitsu, J.

AU - Yamanaka, S.

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

PY - 2003/4

Y1 - 2003/4

N2 - Break-junction tunneling spectra have been measured on MgB2 and Li0.5(THF)yHfNCl to investigate the nature of the superconducting gap. The observed largest gap values at 4 K are 2Δ = 18-20 and 11-12meV for MgB2 (Tc = 39 K) and Li0.5(THF)yHfNCl (26 K), respectively. These values lead to the similar ratio 2Δ/kBTc = 5-6, which is extremely large in comparison with that of the conventional strong-coupling superconductors.

AB - Break-junction tunneling spectra have been measured on MgB2 and Li0.5(THF)yHfNCl to investigate the nature of the superconducting gap. The observed largest gap values at 4 K are 2Δ = 18-20 and 11-12meV for MgB2 (Tc = 39 K) and Li0.5(THF)yHfNCl (26 K), respectively. These values lead to the similar ratio 2Δ/kBTc = 5-6, which is extremely large in comparison with that of the conventional strong-coupling superconductors.

KW - Break junction

KW - Energy gap

KW - Li(THF)HfNCl

KW - MgB

KW - Superconductivity

KW - Tunneling

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DO - 10.1016/S0921-4526(02)01801-X

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EP - 25

JO - Physica B: Condensed Matter

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