First-principles calculations reveal that electrostriction and elastic modulus in wurtzites are strongly polarization-dependent, causing the piezoelectric response to be highly nonlinear and overturning the constant-Q approximation.
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Anomalous Piezoelectricity from Polarization-Dependent Electrostriction in Wurtzites
First-principles calculations reveal that electrostriction and elastic modulus in wurtzites are strongly polarization-dependent, causing the piezoelectric response to be highly nonlinear and overturning the constant-Q approximation.