【摘要】 通过对ρ（T）、T₂和H_c2（T）等参量的测量,得到了金属玻璃Zr_66.7Ni₎33.3)的费米面电子态密度N（E_F）、电声子耦合强度λ和Debye温度θ_D的值。发现:在77～300K温度范围内,其电阻率随温度的变化关系定性上与推广的Ziman理论相符,定量上则有明显的偏离,上临界磁场H_cz和温度的关系与Maki理论相一致。作者认为:与推广的Ziman理论的偏离,在高温区,来源于单声子散射过程对电阻率的贡献,而在低温区,则是由自旋-轨道散射所致;上临界磁场行为中显著的自旋顺磁性和自旋-轨道散射与系统具有较强的原子拓扑短程序和化学短程序有关。同时对超导涨落效应作了讨论。更多还原

【Abstract】 The values of the electronic density of states at Fermi level, the Debye temperature and the electron-phonon coupling constant for metallic glass Zr 66.7 Ni33.3 have been obtained by the measurements of resistivity, superconducting critical temperature and upper critical field. It has been found that p(T) accords with the generalized Ziman theory in the temperature region of 77-300 K qualitatively, but an obvious deviation appears in quantitative analysis. The behaviour of Hc2 is considerably influenced by such effects as the spin paramagnetism and the spin-orbit scattering. The superconducting fluctuation was also observed. The authers suggest that the deviations from the generalized Ziman theory are made by the single-phonon scatering at high temperature, and by the spin-orbit scatering at low temperature. The remarkable effects of the spin paramagnetism and the spin-orbit scatering come from the strong atomic topological and chemical short range order in the sample.更多还原