Citation
S. Pedersen et al., Observation of quantum asymmetry in an Aharonov-Bohm ring, PHYS REV B, 61(8), 2000, pp. 5457-5460
Citations number
30
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
10980121
→ ACNP
Volume
61
Issue
8
Year of publication
2000
Pages
5457 - 5460
Database
ISI
SICI code
1098-0121(20000215)61:8<5457:OOQAIA>2.0.ZU;2-N
Abstract
We have investigated the Aharonov-Bohm effect in a one-dimensional GaAs/Ga0
.7Al0.3As ring at low-magnetic fields. The oscillatory magnetoconductance o
f these systems is systematically studied as a function of density. We obse
rve phase shifts of pi in the magnetoconductance oscillations, and halving
of the fundamental h/e period, as the density is varied. Theoretically we f
ind agreement with the experiment, by introducing an asymmetry between the
two arms of the ring.