TY - JOUR AU - Rostami H. AU - Guinea, Francisco AU - Polini M. AU - Roldán R. PY - 2018 DO - 10.1038/s41699-018-0061-7 UR - http://hdl.handle.net/20.500.12614/1670 T2 - npj 2D Materials and Applications LA - en TI - Piezoelectricity and valley chern number in inhomogeneous hexagonal 2D crystals TY - research article VL - 2 ER -