Probing spin states in quantum dots by spin-resolved one-dimensional contacts

K. Hitachi, M. Yamamoto, S. Tarucha

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

Abstract

We fabricate a quantum dot (QD) with tunnel-coupled quantum wires (QWs) to study the electronic states of the QD with the QWs as spin filters. The propagating modes of the QWs are adjusted with gate voltages to be either spin-resolved (n=1) or spin degenerate (n=2) under finite magnetic fields. Only for the n=1 QWs, we observe large and small Coulomb peaks alternating with magnetic field in the filling factor regime of ν=2 to 4, which is assigned to singlet-triplet transitions induced by correlation effects.

Original languageEnglish
Title of host publicationLOW TEMPERATURE PHYSICS
Subtitle of host publication24th International Conference on Low Temperature Physics - LT24
Pages1367-1368
Number of pages2
DOIs
Publication statusPublished - 01-12-2006
Externally publishedYes
EventLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24 - Orlando, FL, United States
Duration: 10-08-200617-10-2006

Publication series

NameAIP Conference Proceedings
Volume850
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherLOW TEMPERATURE PHYSICS: 24th International Conference on Low Temperature Physics - LT24
CountryUnited States
CityOrlando, FL
Period10-08-0617-10-06

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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