### Abstract

The microwave complex surface impedance (formula presented) of (formula presented) was measured at 0.5 K under magnetic fields H up to 7 T. In nominally pure (formula presented) which is a strongly anisotropic s-wave superconductor, the flux flow resistivity (formula presented) calculated from (formula presented) was twice as large as that expected from the conventional normal-state vortex core model. In Pt-doped samples where the gap anisotropy is smeared out, the enhancement of (formula presented) is reduced and (formula presented) approaches the conventional behavior. These results indicate that the energy dissipation in the vortex core is strongly affected by the anisotropy of the superconducting gap.

Original language | English |
---|---|

Pages (from-to) | 1-5 |

Number of pages | 5 |

Journal | Physical Review B - Condensed Matter and Materials Physics |

Volume | 66 |

Issue number | 18 |

DOIs | |

Publication status | Published - Jan 1 2002 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics

### Cite this

*Physical Review B - Condensed Matter and Materials Physics*,

*66*(18), 1-5. https://doi.org/10.1103/PhysRevB.66.184511

**Effects of superconducting gap anisotropy on the flux flow resistivity in (formula presented).** / Takaki, K.; Koizumi, A.; Hanaguri, T.; Nohara, Minoru; Takagi, H.; Kitazawa, K.; Kato, Y.; Tsuchiya, Y.; Kitano, H.; Maeda, A.

Research output: Contribution to journal › Article

*Physical Review B - Condensed Matter and Materials Physics*, vol. 66, no. 18, pp. 1-5. https://doi.org/10.1103/PhysRevB.66.184511

}

TY - JOUR

T1 - Effects of superconducting gap anisotropy on the flux flow resistivity in (formula presented)

AU - Takaki, K.

AU - Koizumi, A.

AU - Hanaguri, T.

AU - Nohara, Minoru

AU - Takagi, H.

AU - Kitazawa, K.

AU - Kato, Y.

AU - Tsuchiya, Y.

AU - Kitano, H.

AU - Maeda, A.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - The microwave complex surface impedance (formula presented) of (formula presented) was measured at 0.5 K under magnetic fields H up to 7 T. In nominally pure (formula presented) which is a strongly anisotropic s-wave superconductor, the flux flow resistivity (formula presented) calculated from (formula presented) was twice as large as that expected from the conventional normal-state vortex core model. In Pt-doped samples where the gap anisotropy is smeared out, the enhancement of (formula presented) is reduced and (formula presented) approaches the conventional behavior. These results indicate that the energy dissipation in the vortex core is strongly affected by the anisotropy of the superconducting gap.

AB - The microwave complex surface impedance (formula presented) of (formula presented) was measured at 0.5 K under magnetic fields H up to 7 T. In nominally pure (formula presented) which is a strongly anisotropic s-wave superconductor, the flux flow resistivity (formula presented) calculated from (formula presented) was twice as large as that expected from the conventional normal-state vortex core model. In Pt-doped samples where the gap anisotropy is smeared out, the enhancement of (formula presented) is reduced and (formula presented) approaches the conventional behavior. These results indicate that the energy dissipation in the vortex core is strongly affected by the anisotropy of the superconducting gap.

UR - http://www.scopus.com/inward/record.url?scp=85038341793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038341793&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.66.184511

DO - 10.1103/PhysRevB.66.184511

M3 - Article

AN - SCOPUS:85038341793

VL - 66

SP - 1

EP - 5

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 18

ER -