Ferromagnetic electron-rods in very thin films

Abstract The ground state of a very thin film is theoretically investigated on the basis of a planar uniform jellium model as a positive-charge background within the framework of a local spin density approximation with the Perdew–Zunger-type exchange-correlation energy. For a given electron density, the ground state is a function of the film thickness. An electron-self-confined state with rod-like electron distribution is found for very thin films.