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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Lateral elongation of InAs/GaAs quantum dots studied by magnetophotoluminescence
 Křápek, V. ; Kuldová, Karla ; Oswald, Jiří ; Hospodková, Alice ; Hulicius, Eduard ; Humlíček, J.
We have investigated single layer InAs QDs on GaAs substrate grown by MOVPE by means of magnetophotoluminescence up to 24 T. Fitting the field-dependence of band positions, we have found the ratio of lateral sizes within 1.5 –1.7, and the effective mass of 0.04 – 0.05.
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Vlastnosti vertikálně uspořádaných struktur kvantových teček
 Hospodková, Alice ; Kuldová, Karla ; Hulicius, Eduard ; Oswald, Jiří ; Pangrác, Jiří
We have studied the overlap of electron wave functions of stacked QDs. We have found that for sample with the spacer thickness 15 nm the electron wave functions of QDs in stack are fully separated. We have found that for spacer thickness around 7 nm the electron wave functions of smaller QDs from deeper layers still overlap while the electron wave function of bigger QDs at top layers remain separated.
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