Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2000-09-07
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Accepted for publication on Physical Review B Rapid Communications
Scientific paper
10.1103/PhysRevB.62.R10630
Aharonov-Bohm (AB) interference is reported for the first time in the conductance of a vertical nanostructure based on a single GaAs/AlGaAs quantum well (QW). The two lowest subbands of the well are spatially separated by the Hartree barrier originating from electronic repulsion in the modulation-doped QW and provide AB two-path geometry. Split-gates control the in-plane electronic momentum dispersion. In our system, we have clearly demonstrated AB interference in both electrostatic and magnetic modes. In the latter case the magnetic field was applied parallel to the QW plane, and perpendicular to the 0.02 um^2 AB loop. In the electrostatic mode of operation the single-QW scheme adopted led to large transconductance oscillations with relative amplitudes exceeding 30 %. The relevance of the present design strategy for the implementation of coherent nanoelectronic devices is underlined.
Beltram Fabio
Pepper Michael
Piazza Vincenzo
Wegscheider Werner
~Liang C.-T.
No associations
LandOfFree
Large transconductance oscillations in a single-well vertical Aharonov-Bohm interferometer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Large transconductance oscillations in a single-well vertical Aharonov-Bohm interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Large transconductance oscillations in a single-well vertical Aharonov-Bohm interferometer will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-203577