LAUSR

The one-dimensional nanoribbons have great potential applications in novel multifunctional electronic devices. Herewith, we investigate the electronic structure of antimonene nanoribbons using the first-principles calculations. Four ribbon models are considered. All of them are semiconductors with appropriate band gaps. Because of the loss of inversion symmetry, spin-orbit splitting appears in the asymmetric washboard nanoribbons. Significantly, spin splittings of 62 and 44 meV are found at the valence band maximum and conduction band minimum for zigzag asymmetric washboard nanoribbon (aW-zSbNR). Further applying an in-plane electric field introduces a potential difference between the two zigzag edges. The energies for the localized edge states are modified. Eventually spin-orbit-coupling induced band inversion and electron-hole pockets with appropriately the same size could be triggered in a W-zSbNR, which is interesting for exploiting the magnetoresistance effect.One-dimensional nanoribbons: A platform for probing exotic magnetoresistanceElectrically-tunable electron-hole pockets could make antimonene nanoribbons a platform for probing unusual magnetoresistance effects. Some material changes their resistance when a magnetic field is applied—an effect known as magnetoresistance. This phenomenon is harnessed for a range of technological applications but the origin of the recently observed large, non-saturating magnetoresistance in certain materials is somewhat puzzling. Using first-principles calculations, Wenbo Mi and Yan Song from Tianjin University, along with Xiaocha Wang from Tianjin University of Technology, predict that one-dimensional antimonene nanoribbons with a zigzag asymmetric washboard structure could have electron-hole pockets, which are the key features necessary for observing a non-saturating magnetoresistance. As these pockets could be modulated using in-plane electric fields, these nanoribbons could be a tunable platform for probing this exotic phenomenon.