Signatures of the discrete level spectrum in temperature-dependent transport through open quantum-dot arrays - art. no. 193302

Citation
A. Shailos et al., Signatures of the discrete level spectrum in temperature-dependent transport through open quantum-dot arrays - art. no. 193302, PHYS REV B, 6419(19), 2001, pp. 3302
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
0163-1829 → ACNP
Volume
6419
Issue
19
Year of publication
2001
Database
ISI
SICI code
0163-1829(20011115)6419:19<3302:SOTDLS>2.0.ZU;2-F
Abstract
Temperature-dependent studies of the resistance of open quantum-dot arrays reveal a regime of intermediate temperature (similar to 1-5 K), over which the resistance increases exponentially with decreasing temperature. In this Brief Report, we explore the origins of this unexpected localization by st udying its correlation to the temperature-dependent variation of the magnet oconductance. Based on these studies, we suggest that the exponential regim e corresponds to that over which we transition from strongly broadened to e nergetically resolved levels in the dots. In order to provide further suppo rt for this interpretation, we perform numerical studies of temperature-dep endent transport through the quantum dots, and discuss the role that many-b ody effects may play in giving rise to the behavior found in experiment.