Issue |
Europhys. Lett.
Volume 66, Number 6, June 2004
|
|
---|---|---|
Page(s) | 826 - 832 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2003-10263-3 | |
Published online | 01 June 2004 |
Quantum beating in ring conductance: Observation of spin chiral states and Berry's phase
1
Naval Research Laboratory - Washington, DC 20375, USA
2
Department of Electrical and Computer Engineering University of Maryland - College Park, MD 20742, USA
Received:
29
October
2003
Accepted:
15
April
2004
We propose and demonstrate experimentally a novel configuration for observing spin interference effects in mesoscopic rings. Using this configuration, in which the conducting ring and the tangential current lead form a single collimating contact, we have observed the spin quantum beating in the Aharonov-Bohm conductance oscillations. We demonstrate that the beating is the result of the superposition of two independent interference signals associated with two orthogonal states arising from intrinsic spin-orbit interactions. Our work demonstrates the signature of the spin Berry phase in the conductance of quantum rings.
PACS: 73.63.Nm – Quantum wires / 73.23.Ad – Ballistic transport / 73.40.Kp – III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.