| ABERL, Johannes, Petr KLENOVSKÝ, Johannes S. WILDMANN, Javier MARTÍN-SÁNCHEZ, Thomas FROMHERZ, Eugenio ZALLO, Josef HUMLÍČEK, Armando RASTELLI a Rinaldo TROTTA. Inversion of the exciton built-in dipole moment in In(Ga)As quantum dots via nonlinear piezoelectric effect. Physical Review B. COLLEGE PK, MD USA: AMER PHYSICAL SOC, roč. 96, č. 4, s. nestránkováno, 6 s. ISSN 2469-9950. doi:10.1103/PhysRevB.96.045414. 2017. |
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@article{1385671,
author = {Aberl, Johannes and Klenovský, Petr and Wildmann, Johannes S. and MartínandSánchez, Javier and Fromherz, Thomas and Zallo, Eugenio and Humlíček, Josef and Rastelli, Armando and Trotta, Rinaldo},
article_location = {COLLEGE PK, MD USA},
article_number = {4},
doi = {http://dx.doi.org/10.1103/PhysRevB.96.045414},
keywords = {piezoelectricity; quantum dot; strain tuning; NIP diode; electric dipole},
language = {eng},
issn = {2469-9950},
journal = {Physical Review B},
title = {Inversion of the exciton built-in dipole moment in In(Ga)As quantum dots via nonlinear piezoelectric effect},
url = {https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.045414},
volume = {96},
year = {2017}
}
TY - JOUR
ID - 1385671
AU - Aberl, Johannes - Klenovský, Petr - Wildmann, Johannes S. - Martín-Sánchez, Javier - Fromherz, Thomas - Zallo, Eugenio - Humlíček, Josef - Rastelli, Armando - Trotta, Rinaldo
PY - 2017
TI - Inversion of the exciton built-in dipole moment in In(Ga)As quantum dots via nonlinear piezoelectric effect
JF - Physical Review B
VL - 96
IS - 4
SP - nestránkováno
EP - nestránkováno
PB - AMER PHYSICAL SOC
SN - 24699950
KW - piezoelectricity
KW - quantum dot
KW - strain tuning
KW - NIP diode
KW - electric dipole
UR - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.045414
L2 - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.045414
N2 - We show that anisotropic biaxial stress can be used to tune the built-in dipole moment of excitons confined in In(Ga)As quantum dots up to complete erasure of its magnitude and inversion of its sign. We demonstrate that this phenomenon is due to piezoelectricity. We present a model to calculate the applied stress, taking advantage of the so-called piezotronic effect, which produces significant changes in the current-voltage characteristics of the strained diode-membranes containing the quantum dots. Finally, self-consistent k.p calculations reveal that the experimental findings can be only accounted for by the nonlinear piezoelectric effect, whose importance in quantum dot physics has been theoretically recognized although it has proven difficult to single out experimentally.
ER -
ABERL, Johannes, Petr KLENOVSKÝ, Johannes S. WILDMANN, Javier MARTÍN-SÁNCHEZ, Thomas FROMHERZ, Eugenio ZALLO, Josef HUMLÍČEK, Armando RASTELLI a Rinaldo TROTTA. Inversion of the exciton built-in dipole moment in In(Ga)As quantum dots via nonlinear piezoelectric effect. \textit{Physical Review B}. COLLEGE PK, MD USA: AMER PHYSICAL SOC, roč.~96, č.~4, s.~nestránkováno, 6 s. ISSN~2469-9950. doi:10.1103/PhysRevB.96.045414. 2017.
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