### 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 |
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Article number | 052115 |

Journal | Journal of Physics: Conference Series |

Volume | 150 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2009 Jan 1 |

### ASJC Scopus subject areas

- Physics and Astronomy(all)

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## Cite this

_{2-x}Sr

_{x}CuO

_{4}: Phase separation and anomaly at x ∼ 0.21.

*Journal of Physics: Conference Series*,

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