Gap structure and exotic superconducting state of URu2Si 2

Y. Kasahara; T. Iwasawa; H. Shishido; T. Shibauchi; K. Behnia; D. Matsuda; Y. Haga; Y. Onuki; M. Sigrist; Y. Matsuda

doi:10.1088/1742-6596/150/5/052098

Gap structure and exotic superconducting state of URu₂Si ₂

Y. Kasahara, T. Iwasawa, H. Shishido, T. Shibauchi, K. Behnia, D. Matsuda, Y. Haga, Y. Onuki, M. Sigrist, Y. Matsuda

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

Abstract

The heavy-fermion compound URu₂Si₂ has mystified researchers since the superconducting state coexists with enigmatic "hidden order" phase. In order to elucidate the superconducting gap function of URu₂Si₂, we performed the thermal transport measurements at low temperatures on ultraclean single crystals of URu₂Si ₂. The results provide strong evidence for a new type of unconventional superconducting state, having two distinct gaps with different nodal topologies. We propose a gap function with chiral d-wave form Δ_k ∝ k_z(k_x ± ik_y).

Original language	English
Article number	052098
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	5
DOIs	https://doi.org/10.1088/1742-6596/150/5/052098
Publication status	Published - 1 Jan 2009
Externally published	Yes

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title = "Gap structure and exotic superconducting state of URu2Si 2",

abstract = "The heavy-fermion compound URu2Si2 has mystified researchers since the superconducting state coexists with enigmatic {"}hidden order{"} phase. In order to elucidate the superconducting gap function of URu2Si2, we performed the thermal transport measurements at low temperatures on ultraclean single crystals of URu2Si 2. The results provide strong evidence for a new type of unconventional superconducting state, having two distinct gaps with different nodal topologies. We propose a gap function with chiral d-wave form Δk ∝ kz(kx ± iky).",

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T1 - Gap structure and exotic superconducting state of URu2Si 2

AU - Kasahara, Y.

AU - Iwasawa, T.

AU - Shishido, H.

AU - Shibauchi, T.

AU - Behnia, K.

AU - Matsuda, D.

AU - Haga, Y.

AU - Onuki, Y.

AU - Sigrist, M.

AU - Matsuda, Y.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - The heavy-fermion compound URu2Si2 has mystified researchers since the superconducting state coexists with enigmatic "hidden order" phase. In order to elucidate the superconducting gap function of URu2Si2, we performed the thermal transport measurements at low temperatures on ultraclean single crystals of URu2Si 2. The results provide strong evidence for a new type of unconventional superconducting state, having two distinct gaps with different nodal topologies. We propose a gap function with chiral d-wave form Δk ∝ kz(kx ± iky).

AB - The heavy-fermion compound URu2Si2 has mystified researchers since the superconducting state coexists with enigmatic "hidden order" phase. In order to elucidate the superconducting gap function of URu2Si2, we performed the thermal transport measurements at low temperatures on ultraclean single crystals of URu2Si 2. The results provide strong evidence for a new type of unconventional superconducting state, having two distinct gaps with different nodal topologies. We propose a gap function with chiral d-wave form Δk ∝ kz(kx ± iky).

U2 - 10.1088/1742-6596/150/5/052098

DO - 10.1088/1742-6596/150/5/052098

M3 - Article

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SN - 1742-6588

VL - 150

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 5

M1 - 052098

ER -

Gap structure and exotic superconducting state of URu2Si 2

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Gap structure and exotic superconducting state of URu₂Si ₂