Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO 1-y ( Ln=La and Nd) obtained from charge transport experiments

S. Ishida; M. Nakajima; Y. Tomioka; T. Ito; K. Miyazawa; H. Kito; C. H. Lee; M. Ishikado; S. Shamoto; A. Iyo; H. Eisaki; K. M. Kojima; S. Uchida

doi:10.1103/PhysRevB.81.094515

Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO _1-y ( Ln=La and Nd) obtained from charge transport experiments

S. Ishida, M. Nakajima, Y. Tomioka, T. Ito, K. Miyazawa, H. Kito, C. H. Lee, M. Ishikado, S. Shamoto, A. Iyo, H. Eisaki, K. M. Kojima, S. Uchida

Department of Physics

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

22 Citations (Scopus)

Abstract

Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides Ln FeAsO_1-y (Ln: La and Nd) with the highest T_c's among known Fe-based superconductors. The effect of "doping" in this system is mainly on the carrier scattering, quite distinct from that in high- T_c cuprates. In the superconducting regime of the La system with maximum T_c =28 K, the low-temperature resistivity is dominated by a T² term. On the other hand, in the Nd system with T_c higher than 40 K, the carriers are subject to stronger scattering showing T -linear resistivity and small magnetoresistance. Such strong scattering appears crucial for high- T_c superconductivity in the iron-based system.

Original language	English
Article number	094515
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.81.094515
Publication status	Published - 2010 Mar 16

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Ishida, S., Nakajima, M., Tomioka, Y., Ito, T., Miyazawa, K., Kito, H., Lee, C. H., Ishikado, M., Shamoto, S., Iyo, A., Eisaki, H., Kojima, K. M., & Uchida, S. (2010). Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO _1-y ( Ln=La and Nd) obtained from charge transport experiments. Physical Review B - Condensed Matter and Materials Physics, 81(9), [094515]. https://doi.org/10.1103/PhysRevB.81.094515

Ishida, S. ; Nakajima, M. ; Tomioka, Y. ; Ito, T. ; Miyazawa, K. ; Kito, H. ; Lee, C. H. ; Ishikado, M. ; Shamoto, S. ; Iyo, A. ; Eisaki, H. ; Kojima, K. M. ; Uchida, S. / Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO _1-y ( Ln=La and Nd) obtained from charge transport experiments. In: Physical Review B - Condensed Matter and Materials Physics. 2010 ; Vol. 81, No. 9.

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title = "Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO 1-y ( Ln=La and Nd) obtained from charge transport experiments",

abstract = "Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides Ln FeAsO1-y (Ln: La and Nd) with the highest Tc's among known Fe-based superconductors. The effect of {"}doping{"} in this system is mainly on the carrier scattering, quite distinct from that in high- Tc cuprates. In the superconducting regime of the La system with maximum Tc =28 K, the low-temperature resistivity is dominated by a T2 term. On the other hand, in the Nd system with Tc higher than 40 K, the carriers are subject to stronger scattering showing T -linear resistivity and small magnetoresistance. Such strong scattering appears crucial for high- Tc superconductivity in the iron-based system.",

author = "S. Ishida and M. Nakajima and Y. Tomioka and T. Ito and K. Miyazawa and H. Kito and Lee, {C. H.} and M. Ishikado and S. Shamoto and A. Iyo and H. Eisaki and Kojima, {K. M.} and S. Uchida",

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Ishida, S, Nakajima, M, Tomioka, Y, Ito, T, Miyazawa, K, Kito, H, Lee, CH, Ishikado, M, Shamoto, S, Iyo, A, Eisaki, H, Kojima, KM & Uchida, S 2010, 'Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO _1-y ( Ln=La and Nd) obtained from charge transport experiments', Physical Review B - Condensed Matter and Materials Physics, vol. 81, no. 9, 094515. https://doi.org/10.1103/PhysRevB.81.094515

Strong carrier-scattering in iron-pnictide superconductors Ln FeAsO _1-y ( Ln=La and Nd) obtained from charge transport experiments. / Ishida, S.; Nakajima, M.; Tomioka, Y.; Ito, T.; Miyazawa, K.; Kito, H.; Lee, C. H.; Ishikado, M.; Shamoto, S.; Iyo, A.; Eisaki, H.; Kojima, K. M.; Uchida, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 81, No. 9, 094515, 16.03.2010.

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

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AU - Ishida, S.

AU - Nakajima, M.

AU - Tomioka, Y.

AU - Ito, T.

AU - Miyazawa, K.

AU - Kito, H.

AU - Lee, C. H.

AU - Ishikado, M.

AU - Shamoto, S.

AU - Iyo, A.

AU - Eisaki, H.

AU - Kojima, K. M.

AU - Uchida, S.

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AB - Characteristic normal-state charge transport is found in the oxygen-deficient iron-arsenides Ln FeAsO1-y (Ln: La and Nd) with the highest Tc's among known Fe-based superconductors. The effect of "doping" in this system is mainly on the carrier scattering, quite distinct from that in high- Tc cuprates. In the superconducting regime of the La system with maximum Tc =28 K, the low-temperature resistivity is dominated by a T2 term. On the other hand, in the Nd system with Tc higher than 40 K, the carriers are subject to stronger scattering showing T -linear resistivity and small magnetoresistance. Such strong scattering appears crucial for high- Tc superconductivity in the iron-based system.

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