Thermal-conductivity study on the electronic state in the overdoped regime of La2-xSrxCuO4

Phase separation and anomaly at x ∼ 0.21

T. Adachi, S. M. Haidar, T. Kawamata, N. Sugawara, N. Kaneko, M. Uesaka, H. Sato, Y. Tanabe, T. Noji, Kazutaka Kudo, N. Kobayashi, Y. Koike

Research output: Contribution to journalArticle

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Abstract

Measurements of the in-plane thermal conductivity, κa b, in magnetic fields parallel to the c-axis have been carried out in the overdoped regime of La2-xSrxCuO4 with x = 0.18 - 0.30. At low temperatures, κa b is enhanced by the application of magnetic field for x <0.22 due to the Volovik effect, while κ a b is suppressed for x > 0.22. No Volovik effect for x > 0.22 is explained as being due to the phase separation into superconducting and normal-state regions. Moreover, the enhancement of κa b has been found to be singularly weak at x ∼ 0.21 where Tc is a little suppressed in zero field. A so-called stripe order might be stabilized by the application of magnetic field at x ∼ 0.21, as in the case of x ∼ 0.115.

Original languageEnglish
Article number052115
JournalJournal of Physics: Conference Series
Volume150
Issue number5
DOIs
Publication statusPublished - 2009
Externally publishedYes

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thermal conductivity
anomalies
electronics
magnetic fields
augmentation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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Thermal-conductivity study on the electronic state in the overdoped regime of La2-xSrxCuO4 : Phase separation and anomaly at x ∼ 0.21. / Adachi, T.; Haidar, S. M.; Kawamata, T.; Sugawara, N.; Kaneko, N.; Uesaka, M.; Sato, H.; Tanabe, Y.; Noji, T.; Kudo, Kazutaka; Kobayashi, N.; Koike, Y.

In: Journal of Physics: Conference Series, Vol. 150, No. 5, 052115, 2009.

Research output: Contribution to journalArticle

Adachi, T, Haidar, SM, Kawamata, T, Sugawara, N, Kaneko, N, Uesaka, M, Sato, H, Tanabe, Y, Noji, T, Kudo, K, Kobayashi, N & Koike, Y 2009, 'Thermal-conductivity study on the electronic state in the overdoped regime of La2-xSrxCuO4: Phase separation and anomaly at x ∼ 0.21', Journal of Physics: Conference Series, vol. 150, no. 5, 052115. https://doi.org/10.1088/1742-6596/150/5/052115
Adachi, T. ; Haidar, S. M. ; Kawamata, T. ; Sugawara, N. ; Kaneko, N. ; Uesaka, M. ; Sato, H. ; Tanabe, Y. ; Noji, T. ; Kudo, Kazutaka ; Kobayashi, N. ; Koike, Y. / Thermal-conductivity study on the electronic state in the overdoped regime of La2-xSrxCuO4 : Phase separation and anomaly at x ∼ 0.21. In: Journal of Physics: Conference Series. 2009 ; Vol. 150, No. 5.
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AU - Adachi, T.

AU - Haidar, S. M.

AU - Kawamata, T.

AU - Sugawara, N.

AU - Kaneko, N.

AU - Uesaka, M.

AU - Sato, H.

AU - Tanabe, Y.

AU - Noji, T.

AU - Kudo, Kazutaka

AU - Kobayashi, N.

AU - Koike, Y.

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