RT Journal Article T1 Piezoelectricity and valley chern number in inhomogeneous hexagonal 2D crystals A1 Rostami H., A1 Guinea, Francisco A1 Polini M., A1 Roldán R., YR 2018 FD 2018 LK http://hdl.handle.net/20.500.12614/1670 UL http://hdl.handle.net/20.500.12614/1670 LA en DS Repositorio institucional de IMDEA Nanociencia RD 16 may. 2026