Regensburg 2013 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
HL: Fachverband Halbleiterphysik
HL 91: Poster Session: Quantum dots and wires: preparation & characterization & optical properties & transport properties
HL 91.32: Poster
Donnerstag, 14. März 2013, 16:00–20:00, Poster A
Torque magnetometry on doped semiconductor nanowires — •Susanne Goerke1, Florian Herzog1, Marc Wilde1, Eleonora Russo-Averchi2, Anna Dalmau-Mallerqui2, Daniel Rüffer2, Anna Fontcuberta i Morral2, and Dirk Grundler1,3 — 1Physik.-Dep. E10, TU München, D-85748 Garching — 2LMSC, IMX, EPF Lausanne, CH-1015 Lausanne — 3STI, EPF Lausanne, CH-1015 Lausanne
Filamentary semiconductor nanocrystals exhibit novel electronic properties due to their large surface-to-volume ratio and strong one dimensional confinement. We intend to investigate the magnetic properties of ensembles of free-standing GaAs and InAs nanowires, grown on (111) Si substrates by molecular beam epitaxy. Due to doping, the nanowires contain charge carriers. At low temperature, magnetic quantum oscillations (de Haas-van Alphen effect) are expected which allow one to extract scattering times, electron densities, and information on electron-electron interaction. We report on our on-going experiment aiming at torque magnetometry on doped nanowires at 260 mK. Financial support by the DFG via GR1640/3 in SPP 1285, NIM, the SNF, QSIT and the ERC is gratefully acknowledged.