Sökning: "Landau level"

Hittade 2 uppsatser innehållade orden Landau level.

1. 1. Magneto-optical studies of optical spin injection in InAs quantum dot structures

   Master-uppsats, Funktionella elektroniska material; Tekniska högskolan

   Författare :Wang Po-Hsiang; [2012]
   Nyckelord :optical spin injection; optical orientation spectroscopy; magnetic field; Landau level; hyperfine interaction; dynamic nuclear polarization; InAs GaAs quantum dots;

   Sammanfattning : Optical spin injection in InAs/GaAs quantum dots (QDs) structures under cryogenic temperature has been investigated in this work using continuous-wave optical orientation spectroscopy. Circularly polarized luminescence from trions in the QDs was used as a measure for the degree of spin polarization of the carriers in the QD ground states. LÄS MER

3. 2. Exact Diagonalization of Few-electron Quantum Dots

   Kandidat-uppsats, Institutionen för datavetenskap, fysik och matematik, DFM

   Författare :Shirin Hakimi; [2009]
   Nyckelord :two-dimensional quantum dot; strongly correlated system; few-electron system; exact diagonalization; Lanczos method; Landau level; fractional quantum Hall effect; Wigner crystal; Hartree-Fock approximation; Second quantization;

   Sammanfattning : We consider a system of few electrons trapped in a two-dimensional circularquantum dot with harmonic confinement and in the presence of ahomogeneous magnetic field, with focus on the role of e-e interaction. Byperforming the exact diagonalization of the Hamiltonian in second quantization,the low-lying energy levels for spin polarized system are obtained. LÄS MER