Origin of giant negative piezoelectricity in a layered van der Waals ferroelectric
Lü You(Nanyang Technological University), Yang Zhang(Southeast University), Shuang Zhou(Nanyang Technological University), Apoorva Chaturvedi(Nanyang Technological University), Samuel A. Morris(Nanyang Technological University), Fucai Liu(University of Electronic Science and Technology of China), Lei Chang(Nanyang Technological University), Daichi Ichinose(Tokyo Institute of Technology), Hiroshi Funakubo(Tokyo Institute of Technology), Weijin Hu(Chinese Academy of Sciences), Tom Wu(UNSW Sydney), Zheng Liu(Nanyang Technological University), Shuai Dong(Southeast University), Junling Wang(Nanyang Technological University)
Cited by 299Open Access
Abstract
. With the help of single crystal x-ray crystallography and density-functional theory calculations, we unravel the atomistic origin of negative piezoelectricity in this system, which arises from the large displacive instability of Cu ions coupled with its reduced lattice dimensionality. Furthermore, the sizable piezoelectric response and negligible substrate clamping effect of the 2D vdW piezoelectric materials warrant their great potential in nanoscale, flexible electromechanical devices.
Related Papers
No related papers found
Powered by citation graph analysis