## 摘要

The transverse Hall resistivity, ρ_{xy}, and magnetization, M, of [110] and [100] oriented epitaxial Nd_{0.7}Sr_{0.3}MnO_{3} films with large magnetoresistance were measured as a function of temperature and applied magnetic field to study the ordinary and spontaneous Hall coefficients. In the ferromagnetic regime, 100 K <T<200 K, (-R_{s}/R_{o})×T was found to be proportional to exp(-E_{c}/k_{B}T), where R_{s} is the spontaneous Hall coefficient, R_{o} is the ordinary Hall coefficient, and E_{c} is the core energy of the magnetic dipole. In addition, R_{s} was found to be proportional to ρ_{xx}^{2} in the low-temperature regime (T<160 K) where the ordinary Hall coefficient, R_{o}, is independent of temperature. A scaling behavior, R_{s}∝ρ_{xx} was observed at high temperatures (T>160 K). Hall effects of [110] and [100] oriented films are compared to each other. The results are discussed in terms of the exiting theories.

原文 | 英語 |
---|---|

文章編號 | 174415 |

頁（從 - 到） | 1744151-1744156 |

頁數 | 6 |

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

卷 | 64 |

發行號 | 17 |

出版狀態 | 已發佈 - 2001 11月 1 |

## ASJC Scopus subject areas

- 電子、光磁材料
- 凝聚態物理學

## 指紋

深入研究「Anomalous Hall effect of Nd_{0.7}Sr

_{0.3}MnO

_{3}films with large magnetoresistance ratio: Evidence of Berry phase effect」主題。共同形成了獨特的指紋。