Specific features of the electrical conductivity of V$_6$O$_{11}$

A study has been made of the electrical conductivity of V$_6$O$_{11}$ single crystals over a broad range of temperatures covering the regions of the metal phase, metal-insulator phase transition, and insulator phase. It has been shown that the electrical conductivity of the metal phase correlates with the Mott limit of minimum conductivity. To explain the temperature dependence of the electrical conductivity of the V$_6$O$_{11}$ insulator phase, the theory of hopping conduction taking into account the effect of thermal vibration of atoms on the resonance integral has been invoked.