Magnetic penetration depth in the FeAs-based superconductor KFe 2As2

Kazuki Ohishi; Yasuyuki Ishii; Isao Watanabe; Hideto Fukazawa; Taku Saito; Yoh Kohori; Kunihiro Kihou; Chul Ho Lee; Hijiri Kito; Akira Iyo; Hiroshi Eisaki

Magnetic penetration depth in the FeAs-based superconductor KFe ₂As₂

Kazuki Ohishi, Yasuyuki Ishii, Isao Watanabe, Hideto Fukazawa, Taku Saito, Yoh Kohori, Kunihiro Kihou, Chul Ho Lee, Hijiri Kito, Akira Iyo, Hiroshi Eisaki

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

2 Citations (Scopus)

Abstract

Transverse-field muon spin rotation measurements were performed on the iron-based superconductor, KFe₂As₂, in order to investigate the superconducting gap mechanism. We found that the temperature dependence of the magnetic penetration depth λ shows multiple gap-like behavior and that λ depends on the field. These results suggest the existence of quasiparticle excitations outside the vortices.

Original language	English
Article number	SB046
Journal	Journal of the Physical Society of Japan
Volume	81
Issue number	SUPPL.B
Publication status	Published - 2012 Sept 1
Externally published	Yes

Keywords

Iron-based superconductivity
KFeAs
Penetration depth
μSR

ASJC Scopus subject areas

Physics and Astronomy(all)

Cite this

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title = "Magnetic penetration depth in the FeAs-based superconductor KFe 2As2",

abstract = "Transverse-field muon spin rotation measurements were performed on the iron-based superconductor, KFe2As2, in order to investigate the superconducting gap mechanism. We found that the temperature dependence of the magnetic penetration depth λ shows multiple gap-like behavior and that λ depends on the field. These results suggest the existence of quasiparticle excitations outside the vortices.",

keywords = "Iron-based superconductivity, KFeAs, Penetration depth, μSR",

author = "Kazuki Ohishi and Yasuyuki Ishii and Isao Watanabe and Hideto Fukazawa and Taku Saito and Yoh Kohori and Kunihiro Kihou and Lee, {Chul Ho} and Hijiri Kito and Akira Iyo and Hiroshi Eisaki",

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language = "English",

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T1 - Magnetic penetration depth in the FeAs-based superconductor KFe 2As2

AU - Ohishi, Kazuki

AU - Ishii, Yasuyuki

AU - Watanabe, Isao

AU - Fukazawa, Hideto

AU - Saito, Taku

AU - Kohori, Yoh

AU - Kihou, Kunihiro

AU - Lee, Chul Ho

AU - Kito, Hijiri

AU - Iyo, Akira

AU - Eisaki, Hiroshi

PY - 2012/9/1

Y1 - 2012/9/1

N2 - Transverse-field muon spin rotation measurements were performed on the iron-based superconductor, KFe2As2, in order to investigate the superconducting gap mechanism. We found that the temperature dependence of the magnetic penetration depth λ shows multiple gap-like behavior and that λ depends on the field. These results suggest the existence of quasiparticle excitations outside the vortices.

AB - Transverse-field muon spin rotation measurements were performed on the iron-based superconductor, KFe2As2, in order to investigate the superconducting gap mechanism. We found that the temperature dependence of the magnetic penetration depth λ shows multiple gap-like behavior and that λ depends on the field. These results suggest the existence of quasiparticle excitations outside the vortices.

KW - Iron-based superconductivity

KW - KFeAs

KW - Penetration depth

KW - μSR

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M3 - Article

AN - SCOPUS:84871767856

SN - 0031-9015

VL - 81

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

IS - SUPPL.B

M1 - SB046

ER -

Magnetic penetration depth in the FeAs-based superconductor KFe ₂As₂

Abstract

Keywords

ASJC Scopus subject areas

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