Reconstruction of nuclear quadrupole interaction in (In,Ga)As/GaAs quantum dots observed by transmission electron microscopy

P. S. Sokolov, M. Yu. Petrov, T. Mehrtens, K. Müller-Caspary, A. Rosenauer, D. Reuter, A. D. Wieck

Результат исследований: Научные публикации в периодических изданияхстатья

10 Цитирования (Scopus)

Аннотация

A microscopic study of the individual annealed (In,Ga)As/GaAs quantum dots is done by means of high-resolution transmission electron microscopy. The Cauchy-Green strain-tensor component distribution and the chemical composition of the (In,Ga)As alloy are extracted from the microscopy images. The image processing allows for the reconstruction of the strain-induced electric-field gradients at the individual atomic columns extracting thereby the magnitude and asymmetry parameter of the nuclear quadrupole interaction. Nuclear magnetic resonance absorption spectra are analyzed for parallel and transverse mutual orientations of the electric- field gradient and a static magnetic field.
Язык оригиналане определен
Страницы (с-по)045301
ЖурналPhysical Review B - Condensed Matter and Materials Physics
Том93
DOI
СостояниеОпубликовано - 2016
Опубликовано для внешнего пользованияДа

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