Superconductivity in Y2C3 with medium Tc

Satoshi Akutagawa; Jun Akimitsu

doi:10.1016/j.stam.2005.11.011

Superconductivity in Y₂C₃ with medium T_c

Satoshi Akutagawa, Jun Akimitsu

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Recently, we have reported a relatively high-T_c superconductivity in Y₂C₃ at 18 K whose T_c could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y₂C₃ J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-T_c phase in Y₂C₃ and examined its physical properties in detail. From a specific heat measurement, ΔC(T_c)/γT _c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/k_B T_c=5.40, indicating that the superconductivity in Y₂C₃ can be described by an s-wave strong coupling regime.

Original language	English
Pages (from-to)	2-5
Number of pages	4
Journal	Science and Technology of Advanced Materials
Volume	7
Issue number	1 SPEC. ISS.
DOIs	https://doi.org/10.1016/j.stam.2005.11.011
Publication status	Published - Jan 2006
Externally published	Yes

Keywords

Carbide
Magnetic susceptibility
Specific heat
Superconductivity
YC

ASJC Scopus subject areas

Materials Science(all)

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10.1016/j.stam.2005.11.011

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@article{97a6638a6ad144fb98e41670b0b30b1e,

title = "Superconductivity in Y2C3 with medium Tc ",

abstract = "Recently, we have reported a relatively high-Tc superconductivity in Y2C3 at 18 K whose Tc could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y2C3 J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-Tc phase in Y2C3 and examined its physical properties in detail. From a specific heat measurement, ΔC(Tc)/γT c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/kB Tc=5.40, indicating that the superconductivity in Y2C3 can be described by an s-wave strong coupling regime.",

keywords = "Carbide, Magnetic susceptibility, Specific heat, Superconductivity, YC",

author = "Satoshi Akutagawa and Jun Akimitsu",

note = "Funding Information: This work was partly supported by the 21st COE program, {\textquoteleft}High-Tech Research Center{\textquoteright} Project for Private Universities: matching fund subsidy from MEXT (Ministry of Education, Culture, Sports, Science and Technology; 2002–2004), and a Grant-in-Aid for Scientific Research on Priority Area from the Ministry of Education, Culture, Sports, Science and Technology of Japan.",

year = "2006",

month = jan,

doi = "10.1016/j.stam.2005.11.011",

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AU - Akutagawa, Satoshi

AU - Akimitsu, Jun

N1 - Funding Information: This work was partly supported by the 21st COE program, ‘High-Tech Research Center’ Project for Private Universities: matching fund subsidy from MEXT (Ministry of Education, Culture, Sports, Science and Technology; 2002–2004), and a Grant-in-Aid for Scientific Research on Priority Area from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

PY - 2006/1

Y1 - 2006/1

N2 - Recently, we have reported a relatively high-Tc superconductivity in Y2C3 at 18 K whose Tc could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y2C3 J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-Tc phase in Y2C3 and examined its physical properties in detail. From a specific heat measurement, ΔC(Tc)/γT c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/kB Tc=5.40, indicating that the superconductivity in Y2C3 can be described by an s-wave strong coupling regime.

AB - Recently, we have reported a relatively high-Tc superconductivity in Y2C3 at 18 K whose Tc could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y2C3 J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-Tc phase in Y2C3 and examined its physical properties in detail. From a specific heat measurement, ΔC(Tc)/γT c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/kB Tc=5.40, indicating that the superconductivity in Y2C3 can be described by an s-wave strong coupling regime.

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