Tunnel-coupling blockade in vertical/lateral hybrid dot to study many-body states for electron number N=1,2 and 3

K. Yamada, M. Stopa, Y. Tokura, T. Hatano, T. Ota, T. Yamaguchi, S. Tarucha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report an asymmetric current blockade phenomenon which occurs in unique, hybrid vertical/lateral GaAs quantum dots and which modifies the nonlinear current-voltage characteristics. The data exhibit an enlargement of Coulomb blockade regions in the plane of source-drain and gate voltage, revealing suppression of elementary transitions between ground states or excited state of different electron number. This suppression indicates inaccessibility due to the eigenstate from the dot to 2DEG.

Original languageEnglish
Title of host publicationPHYSICS OF SEMICONDUCTORS
Subtitle of host publication27th International Conference on the Physics of Semiconductors, ICPS-27
Pages785-786
Number of pages2
DOIs
Publication statusPublished - Jun 30 2005
EventPHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27 - Flagstaff, AZ, United States
Duration: Jul 26 2004Jul 30 2004

Publication series

NameAIP Conference Proceedings
Volume772
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherPHYSICS OF SEMICONDUCTORS: 27th International Conference on the Physics of Semiconductors, ICPS-27
Country/TerritoryUnited States
CityFlagstaff, AZ
Period7/26/047/30/04

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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