title: Valence-force model and nanomechanics of single-layer phosphorene.
abstract: In order to understand the relation of strain and material properties, both a microscopic model connecting a given strain to the displacement of atoms, and a macroscopic model relating applied stress to induced strain, are required. Starting from a valence-force model for black phosphorous [Kaneta et al., Solid State Communications, 1982, 44, 613] we use recent experimental and computational results to obtain an improved set of valence-force parameters for phosphorene. From the model we calculate the phonon dispersion and the elastic properties of single-layer phosphorene. Finally, we use these results to derive a complete continuum model, including the bending rigidities, valid for long-wavelength deformations of phosphorene. This continuum model is then used to study the properties of pressurized suspended phosphorene sheets.
authors: Department of Physics, Chalmers University of Technology, Gothenburg, Sweden. midtvedt@chalmers.se.
authors: Daniel
authors: D
authors: Midtvedt
authors: Max-Planck-Institute for the Physics of Complex Systems, Dresden, Germany. croy@pks.mpg.de.
authors: Alexander
authors: A
authors: Croy