Intrasubband plasmons in a finite array of quantum wires containing a displaced quantum wire

The paper deals with the theoretical investigation of intrasubband plasmons in an array of quantum wires (QWs) consisting of a finite number of QWs with the same one-dimensional density of electrons. We consider that all QWs are arranged at an equal distance from each other except one QW, which is displaced from its position of periodicity. The existence of two local plasmon modes in the plasmon spectrum is found