Line nodes in the energy gap of superconducting BaFe2 ( As 1-xPx )2 single crystals as seen via penetration depth and thermal conductivity

K. Hashimoto; M. Yamashita; S. Kasahara; Y. Senshu; N. Nakata; S. Tonegawa; K. Ikada; A. Serafin; A. Carrington; T. Terashima; H. Ikeda; T. Shibauchi; Y. Matsuda

doi:10.1103/PhysRevB.81.220501

Line nodes in the energy gap of superconducting BaFe₂ ( As _1-xP_x )₂ single crystals as seen via penetration depth and thermal conductivity

K. Hashimoto, M. Yamashita, S. Kasahara, Y. Senshu, N. Nakata, S. Tonegawa, K. Ikada, A. Serafin, A. Carrington, T. Terashima, H. Ikeda, T. Shibauchi, Y. Matsuda

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

204 Citations (Scopus)

Abstract

We report magnetic penetration depth and thermal-conductivity data for high-quality single crystals of BaFe₂ ( As_1-xP_x )₂ (Tc =30 K) which provide strong evidence that this material has line nodes in its energy gap. This is distinctly different from the nodeless gap found for (Ba,K) Fe₂ As₂ which has similar Tc and phase diagram. Our results indicate that repulsive electronic interactions play an essential role for Fe-based high- Tc superconductivity but that uniquely there are distinctly different pairing states, with and without nodes, which have comparable Tc.

Original language	English
Article number	220501
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.81.220501
Publication status	Published - Jun 1 2010
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Hashimoto, K., Yamashita, M., Kasahara, S., Senshu, Y., Nakata, N., Tonegawa, S., Ikada, K., Serafin, A., Carrington, A., Terashima, T., Ikeda, H., Shibauchi, T., & Matsuda, Y. (2010). Line nodes in the energy gap of superconducting BaFe₂ ( As _1-xP_x )₂ single crystals as seen via penetration depth and thermal conductivity. Physical Review B - Condensed Matter and Materials Physics, 81(22), [220501]. https://doi.org/10.1103/PhysRevB.81.220501

Hashimoto, K, Yamashita, M, Kasahara, S, Senshu, Y, Nakata, N, Tonegawa, S, Ikada, K, Serafin, A, Carrington, A, Terashima, T, Ikeda, H, Shibauchi, T & Matsuda, Y 2010, 'Line nodes in the energy gap of superconducting BaFe₂ ( As _1-xP_x )₂ single crystals as seen via penetration depth and thermal conductivity', Physical Review B - Condensed Matter and Materials Physics, vol. 81, no. 22, 220501. https://doi.org/10.1103/PhysRevB.81.220501

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abstract = "We report magnetic penetration depth and thermal-conductivity data for high-quality single crystals of BaFe2 ( As1-xPx )2 (Tc =30 K) which provide strong evidence that this material has line nodes in its energy gap. This is distinctly different from the nodeless gap found for (Ba,K) Fe2 As2 which has similar Tc and phase diagram. Our results indicate that repulsive electronic interactions play an essential role for Fe-based high- Tc superconductivity but that uniquely there are distinctly different pairing states, with and without nodes, which have comparable Tc.",

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AU - Hashimoto, K.

AU - Yamashita, M.

AU - Kasahara, S.

AU - Senshu, Y.

AU - Nakata, N.

AU - Tonegawa, S.

AU - Ikada, K.

AU - Serafin, A.

AU - Carrington, A.

AU - Terashima, T.

AU - Ikeda, H.

AU - Shibauchi, T.

AU - Matsuda, Y.

PY - 2010/6/1

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N2 - We report magnetic penetration depth and thermal-conductivity data for high-quality single crystals of BaFe2 ( As1-xPx )2 (Tc =30 K) which provide strong evidence that this material has line nodes in its energy gap. This is distinctly different from the nodeless gap found for (Ba,K) Fe2 As2 which has similar Tc and phase diagram. Our results indicate that repulsive electronic interactions play an essential role for Fe-based high- Tc superconductivity but that uniquely there are distinctly different pairing states, with and without nodes, which have comparable Tc.

AB - We report magnetic penetration depth and thermal-conductivity data for high-quality single crystals of BaFe2 ( As1-xPx )2 (Tc =30 K) which provide strong evidence that this material has line nodes in its energy gap. This is distinctly different from the nodeless gap found for (Ba,K) Fe2 As2 which has similar Tc and phase diagram. Our results indicate that repulsive electronic interactions play an essential role for Fe-based high- Tc superconductivity but that uniquely there are distinctly different pairing states, with and without nodes, which have comparable Tc.

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Line nodes in the energy gap of superconducting BaFe₂ ( As _1-xP_x )₂ single crystals as seen via penetration depth and thermal conductivity

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