Quantum interference of electrons in Nb 5 − δ Te 4 single crystals

摘要: The compound $Nb_{5-\delta}Te_4$ ($\delta=0.23$) with quasi-one-dimensional crystal structure undergoes a transition to superconductivity at $T_c$=0.6--0.9 K. Its electronic transport properties in the normal state are studied temperature range 1.3--270 K and magnetic fields up 11 T. variation of resistivity is weak ($<2%$) investigated range. Nonmonotonic behavior observed which characterized by two local maxima $T\sim$2 $\sim$30 dependence interpreted as an interplay localization, antilocalization, electron-electron interaction effects diffusion Cooper channel. dephasing time $\tau_\phi$ extracted from magnetoresistance data determined electron-phonon interaction. saturation low-temperature limit correlates $T_c$ individual ascribed scattering on impurities.