### Abstract

Measurements of the in-plane thermal conductivity, κ_{a b}, in magnetic fields parallel to the c-axis have been carried out in the overdoped regime of La_{2-x}Sr_{x}CuO_{4} with x = 0.18 - 0.30. At low temperatures, κ_{a 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 κ_{a b} has been found to be singularly weak at x ∼ 0.21 where T_{c} 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 language | English |
---|---|

Article number | 052115 |

Journal | Journal of Physics: Conference Series |

Volume | 150 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2009 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Physics and Astronomy(all)

### Cite this

*Journal of Physics: Conference Series*,

*150*(5), [052115]. https://doi.org/10.1088/1742-6596/150/5/052115

**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.

Research output: Contribution to journal › Article

*Journal of Physics: Conference Series*, vol. 150, no. 5, 052115. https://doi.org/10.1088/1742-6596/150/5/052115

}

TY - JOUR

T1 - Thermal-conductivity study on the electronic state in the overdoped regime of La2-xSrxCuO4

T2 - Phase separation and anomaly at x ∼ 0.21

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.

PY - 2009

Y1 - 2009

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=77952524882&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952524882&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/150/5/052115

DO - 10.1088/1742-6596/150/5/052115

M3 - Article

VL - 150

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 5

M1 - 052115

ER -