## 摘要

We have measured the electron-phonon scattering rates 1/τ_{ep} from a weak-localization study of a series of high-resistivity tin-doped Ti_{73}Al_{27} alloys. The resistivities of these alloys are essentially the same and are so high that the electron elastic mean free path l approaches the interatomic spacing, resulting in a very small value of q_{ph}l≈0.0056T (q_{ph} is the wave number of the thermal phonons, and T is the temperature). Based on as many as about 60 magnetoresistivity measurements between 2 and 22 K, we are able to determine the dependence of 1/τ_{ep} on T to within a great degree of accuracy and find that 1/τ_{ep} varies essentially with T^{2} in the dirty limit (q_{ph}l≪1). This observation is not understood in terms of the current theoretical concept of electron-phonon interaction in disordered metals.

原文 | English |
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頁（從 - 到） | 3940-3943 |

頁數 | 4 |

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

卷 | 60 |

發行號 | 6 |

DOIs | |

出版狀態 | Published - 1 8月 1999 |