Piezoelectric effect on the intrinsic dissipation in oscillating gallium nitride nanobelts

J Zhang and SA Meguid, EPL, 112, 26003 (2015).

DOI: 10.1209/0295-5075/112/26003

The intrinsic dissipation in oscillating gallium nitride (GaN) nanobelts subject to an electric field has been examined using molecular-dynamics simulations. Owing to the piezoelectric effect of GaN nanobelts, their quality factor is greatly influenced by the electric field and can be improved by over 10 times across a range of electric-field strengths. In addition, the temperature dependence of the quality factor is also significantly affected by the applied electric field. Some possible explanations as to how the piezoelectric effect influences the intrinsic energy loss are proposed based on the classical thermoelastic dissipation theory. Copyright (C) EPLA, 2015

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