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Piezoelectric effect in wurtzite GaAs nanowires: Growth, characterization, and electromechanical 3D modeling
Author(s) -
Lysak Volodymyr V.,
Soshnikov Ilya P.,
Lahderanta Erkki,
Cirlin George E.
Publication year - 2016
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201600204
Subject(s) - wurtzite crystal structure , nanowire , piezoelectricity , materials science , pressing , piezoelectric coefficient , nanogenerator , characterization (materials science) , layer (electronics) , optoelectronics , condensed matter physics , composite material , nanotechnology , metallurgy , physics , zinc
The piezoelectric effect in wurtzite‐type GaAs nanowires was theoretically analyzed using an electromechanical 3D model. The difference between the theoretical and measured piezoelectric strain coefficient is explained by an enhanced pressing force of the contact layer on the nanowire. Simulations show the potential decreasing when nanowires are partly inside in the top metal contact due to a decreasing effective length and pressing force enhancement.