Quantum size effect in conductive properties of silver nanofilms

We present the results of our theoretical study of quantum conductance properties of ultrathin silver nanofilms. As the result of our ab initio calculations the quantum size effect in the dependence of electronic conductivity of silver nanofilms on its thickness was found. We revealed the changes in the electronic structure of silver ultrathin nanofilm leading to a change of its conductance properties, which explains the change in the conductive characteristics of ultrathin films observed before in several experimental works. Also we found the emergence of dielectric nature of silver nanofilm conductivity due to changes in its band structure.