Elastic Conductivity of Germanene Ribbons with Acceptor Defects

This paper is a theoretical study of the piezoresistivity of germanene nanoribbons (GeNRs) of various structural modifications (arm-chair and zig-zag) with acceptor structural defects. Gallium atoms were chosen as impurities. A phenomenological expression for the band structure of nanoribbons (NRs) deformed by tension and compression is proposed. The dependencies of the longitudinal component of the elastic conductivity tensor on the relative deformation of tension and compression, the concentration of impurities, and the width of the NR are analyzed.