title: Laterally defined freely suspended quantum dots in GaAs/AlGaAs heterostructures.
abstract: Free-standing beams containing a two-dimensional electron system are shaped from a GaAs/AlGaAs heterostructure. Quantum point contacts and (double) quantum dots are laterally defined using metal top gates. We investigate the electronic properties of these nanostructures by transport spectroscopy. Tunable localized electron states in freely suspended nanostructures are a promising tool to investigate the electron-phonon interaction.
authors.affiliation: Center for NanoScience and Fakultät für Physik der Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, D-80539 Munich, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Rossler
authors.forename: M
authors.initials: M
authors.lastname: Bichler
authors.forename: D
authors.initials: D
authors.lastname: Schuh
authors.forename: W
authors.initials: W
authors.lastname: Wegscheider
authors.forename: S
authors.initials: S
authors.lastname: Ludwig