Electronic transport in materials has always been enigmatic due to the interplay between disorder and electronic correlation of varying degrees. Tuning of disorder/order of atoms in crystalline rock-salt tellurides and associated charge carrier localization/delocalization have significant impact on its thermoelectric properties. In the weak limit of disorder and charge carrier interactions, associated phenomena contribute as a correction to the conventional classical electrical conductivity which is usually observed in two-dimensional (2D) thin films but is rare in bulk three-dimensional (3D) materials. Here, we report the experimental observation of coexisting disorder enhanced electron-electron interaction (diffusive) along with the weak anti-localization (quantum diffusive) corrections to the two band classical theory of electronic transport in the 3D site disordered AgSnSbTe₃. Our analysis of low temperature magneto-transport investigations along with the theoretical modelling provide the evidence of the involvement of only one type of carriers in the interaction (diffusive), while both carrier types are participating in the weak anti-localization (quantum diffusive) phenomena. Thus, this study demonstrates the fascinating multi-carrier type electronic transport with the coexistence of quantum diffusive and diffusive corrections to the classical conductivity, which should help in designing high performance material for various applications such as thermoelectrics.

由于无序和不同程度的电子相关性之间的相互作用，材料中的电子传输一直是个谜。结晶岩盐碲化物中原子的无序/有序调整和相关的电荷载流子定位/离域对其热电性能有重大影响。在无序和电荷载流子相互作用的弱极限中，相关现象有助于校正传统的经典电导率，这通常在二维 (2D) 薄膜中观察到，但在体三维 (3D) 材料中很少见。这里，₃ . 我们对低温磁输运研究的分析以及理论模型提供了仅一种类型的载流子参与相互作用（扩散）的证据，而两种载流子类型都参与了弱反定位（量子扩散）现象. 因此，本研究展示了迷人的多载流子型电子传输，同时对经典电导率进行了量子扩散和扩散校正，这将有助于设计用于热电等各种应用的高性能材料。