Laser-excited ultrahigh-resolution photoemission study of anisotropic s-wave superconductor YNi2B2C

T. Baba; T. Yokoya; S. Tsuda; T. Kiss; T. Shimojima; S. Shin; T. Togashi; C. T. Chen; C. Q. Zhang; S. Watanabe; T. Watanabe; Minoru Nohara; H. Takagi

doi:10.1016/j.physb.2006.01.204

Laser-excited ultrahigh-resolution photoemission study of anisotropic s-wave superconductor YNi₂B₂C

T. Baba, T. Yokoya, S. Tsuda, T. Kiss, T. Shimojima, S. Shin, T. Togashi, C. T. Chen, C. Q. Zhang, S. Watanabe, T. Watanabe, Minoru Nohara, H. Takagi

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

5 Citations (Scopus)

Abstract

We have performed laser-excited ultrahigh-resolution photoemission spectroscopy of Y(Ni_1-xPt_x)₂B₂C (x=0.0, 0.2) and numerical simulation using s, anisotropic s and even s+g symmetry to study the superconducting gap anisotropy in borocarbide supercodnuctors. We observed the reduction of gap anisotropy in the x=0.2 sample in comparison to the x=0.0 sample, confirming the anisotropic s-wave gap. We also found that the spectrum of x=0.0 at 3.5 K cannot be fitted well with the s+g-wave symmetry, implying that the s+g symmetry is too simple to describe over all supercodncuting gap electronic structure of borocarbides.

Original language	English
Pages (from-to)	469-470
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	378-380
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.physb.2006.01.204
Publication status	Published - May 1 2006

Keywords

Anistropic s-wave superconductorp
Antiferromagnetic superconductor
Photoemission spectroscopy

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physb.2006.01.204

Cite this

Baba, T., Yokoya, T., Tsuda, S., Kiss, T., Shimojima, T., Shin, S., Togashi, T., Chen, C. T., Zhang, C. Q., Watanabe, S., Watanabe, T., Nohara, M., & Takagi, H. (2006). Laser-excited ultrahigh-resolution photoemission study of anisotropic s-wave superconductor YNi₂B₂C. Physica B: Condensed Matter, 378-380(SPEC. ISS.), 469-470. https://doi.org/10.1016/j.physb.2006.01.204

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title = "Laser-excited ultrahigh-resolution photoemission study of anisotropic s-wave superconductor YNi2B2C",

abstract = "We have performed laser-excited ultrahigh-resolution photoemission spectroscopy of Y(Ni1-xPtx)2B2C (x=0.0, 0.2) and numerical simulation using s, anisotropic s and even s+g symmetry to study the superconducting gap anisotropy in borocarbide supercodnuctors. We observed the reduction of gap anisotropy in the x=0.2 sample in comparison to the x=0.0 sample, confirming the anisotropic s-wave gap. We also found that the spectrum of x=0.0 at 3.5 K cannot be fitted well with the s+g-wave symmetry, implying that the s+g symmetry is too simple to describe over all supercodncuting gap electronic structure of borocarbides.",

keywords = "Anistropic s-wave superconductorp, Antiferromagnetic superconductor, Photoemission spectroscopy",

author = "T. Baba and T. Yokoya and S. Tsuda and T. Kiss and T. Shimojima and S. Shin and T. Togashi and Chen, {C. T.} and Zhang, {C. Q.} and S. Watanabe and T. Watanabe and Minoru Nohara and H. Takagi",

note = "Funding Information: This study was supported by Grant-in-aid from the Ministry of Education, Science, and Culture of Japan. T. B. thanks center of excellence for applied physics on strong correlation for financial support.",

year = "2006",

month = may,

day = "1",

doi = "10.1016/j.physb.2006.01.204",

language = "English",

volume = "378-380",

pages = "469--470",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

number = "SPEC. ISS.",

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TY - JOUR

T1 - Laser-excited ultrahigh-resolution photoemission study of anisotropic s-wave superconductor YNi2B2C

AU - Baba, T.

AU - Yokoya, T.

AU - Tsuda, S.

AU - Kiss, T.

AU - Shimojima, T.

AU - Shin, S.

AU - Togashi, T.

AU - Chen, C. T.

AU - Zhang, C. Q.

AU - Watanabe, S.

AU - Watanabe, T.

AU - Nohara, Minoru

AU - Takagi, H.

N1 - Funding Information: This study was supported by Grant-in-aid from the Ministry of Education, Science, and Culture of Japan. T. B. thanks center of excellence for applied physics on strong correlation for financial support.

PY - 2006/5/1

Y1 - 2006/5/1

N2 - We have performed laser-excited ultrahigh-resolution photoemission spectroscopy of Y(Ni1-xPtx)2B2C (x=0.0, 0.2) and numerical simulation using s, anisotropic s and even s+g symmetry to study the superconducting gap anisotropy in borocarbide supercodnuctors. We observed the reduction of gap anisotropy in the x=0.2 sample in comparison to the x=0.0 sample, confirming the anisotropic s-wave gap. We also found that the spectrum of x=0.0 at 3.5 K cannot be fitted well with the s+g-wave symmetry, implying that the s+g symmetry is too simple to describe over all supercodncuting gap electronic structure of borocarbides.

AB - We have performed laser-excited ultrahigh-resolution photoemission spectroscopy of Y(Ni1-xPtx)2B2C (x=0.0, 0.2) and numerical simulation using s, anisotropic s and even s+g symmetry to study the superconducting gap anisotropy in borocarbide supercodnuctors. We observed the reduction of gap anisotropy in the x=0.2 sample in comparison to the x=0.0 sample, confirming the anisotropic s-wave gap. We also found that the spectrum of x=0.0 at 3.5 K cannot be fitted well with the s+g-wave symmetry, implying that the s+g symmetry is too simple to describe over all supercodncuting gap electronic structure of borocarbides.

KW - Anistropic s-wave superconductorp

KW - Antiferromagnetic superconductor

KW - Photoemission spectroscopy

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