Abstract
Quantum dots with high lateral quantization energies are created on InSb by means of a perforated Schottky gate. With a gate voltage the lateral quantization energies can be tuned and approach values up to \ensuremath{\Elzxh}${\mathrm{\ensuremath{\omega}}}_{0}$\ensuremath{\approxeq}25 meV, which is comparable to the subband separations connected with the vertical motion in the corresponding quasi-two-dimensional electron system. By far-infrared spectroscopy, we observe the two fundamental modes ${\mathrm{\ensuremath{\omega}}}_{\ifmmode\pm\else\textpm\fi{}}$ in a magnetic field and verify the predicted polarization selection rules. The measured transition energies are described by employing a realistic three-dimensional model potential and taking into account the conduction band nonparabolicity of InSb and the resulting coupling of the vertical subbands.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
