Superconducting properties of the new boride-carbide superconductors

H. Takagi; R. J. Cava; H. Eisaki; J. O. Lee; K. Mizuhashi; B. Batlogg; S. Uchida; J. J. Krajewski; W. F. Peck

doi:10.1016/0921-4534(94)90431-6

Superconducting properties of the new boride-carbide superconductors

H. Takagi, R. J. Cava, H. Eisaki, J. O. Lee, K. Mizuhashi, B. Batlogg, S. Uchida, J. J. Krajewski, W. F. Peck

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Abstract

The uper critical field H_c2 and the lower critical field H_c1 have been measured for a new family of boride-carbide superconductors, LnNi₂B₂C (Ln=Lu and Y) and mixed-phase Y-Pd-B-C. The results for the Ni compounds indicate that these are clean-limit superconductors with a coherence length ξ of {reversed tilde}60 Å. A moderately high density of states, likely due to a dominant Ni 3d character near the Fermi level, is estimated from the obtained superconducting parameters, placing them in a comparable position to A-15 compounds in the linear specific-heat coefficient γ and T_c plot.

Original language	English (US)
Pages (from-to)	389-392
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	228
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(94)90431-6
State	Published - Jul 20 1994
Externally published	Yes

All Science Journal Classification (ASJC) codes

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

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10.1016/0921-4534(94)90431-6

Cite this

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title = "Superconducting properties of the new boride-carbide superconductors",

abstract = "The uper critical field Hc2 and the lower critical field Hc1 have been measured for a new family of boride-carbide superconductors, LnNi2B2C (Ln=Lu and Y) and mixed-phase Y-Pd-B-C. The results for the Ni compounds indicate that these are clean-limit superconductors with a coherence length ξ of {reversed tilde}60 {\AA}. A moderately high density of states, likely due to a dominant Ni 3d character near the Fermi level, is estimated from the obtained superconducting parameters, placing them in a comparable position to A-15 compounds in the linear specific-heat coefficient γ and Tc plot.",

author = "H. Takagi and Cava, {R. J.} and H. Eisaki and Lee, {J. O.} and K. Mizuhashi and B. Batlogg and S. Uchida and Krajewski, {J. J.} and Peck, {W. F.}",

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doi = "10.1016/0921-4534(94)90431-6",

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T1 - Superconducting properties of the new boride-carbide superconductors

AU - Takagi, H.

AU - Cava, R. J.

AU - Eisaki, H.

AU - Lee, J. O.

AU - Mizuhashi, K.

AU - Batlogg, B.

AU - Uchida, S.

AU - Krajewski, J. J.

AU - Peck, W. F.

PY - 1994/7/20

Y1 - 1994/7/20

N2 - The uper critical field Hc2 and the lower critical field Hc1 have been measured for a new family of boride-carbide superconductors, LnNi2B2C (Ln=Lu and Y) and mixed-phase Y-Pd-B-C. The results for the Ni compounds indicate that these are clean-limit superconductors with a coherence length ξ of {reversed tilde}60 Å. A moderately high density of states, likely due to a dominant Ni 3d character near the Fermi level, is estimated from the obtained superconducting parameters, placing them in a comparable position to A-15 compounds in the linear specific-heat coefficient γ and Tc plot.

AB - The uper critical field Hc2 and the lower critical field Hc1 have been measured for a new family of boride-carbide superconductors, LnNi2B2C (Ln=Lu and Y) and mixed-phase Y-Pd-B-C. The results for the Ni compounds indicate that these are clean-limit superconductors with a coherence length ξ of {reversed tilde}60 Å. A moderately high density of states, likely due to a dominant Ni 3d character near the Fermi level, is estimated from the obtained superconducting parameters, placing them in a comparable position to A-15 compounds in the linear specific-heat coefficient γ and Tc plot.

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JO - Physica C: Superconductivity and its applications

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ER -

Superconducting properties of the new boride-carbide superconductors

Abstract

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