Magnetoconductance of a few-electron open quantum dot

✍ Scribed by I.V. Zozoulenko; A.S. Sachrajda; C. Gould; K.-F. Berggren; P. Zawadzki; Y. Feng; Z. Wasilewski

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 224 KB
• Volume: 6
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(99)00205-2

✦ Synopsis

Magnetoconductance of a small open lateral dot is studied both theoretically and experimentally for the conditions when the dot contains down to ∼ 15 electrons. We conÿrm the existence of a new regime for open dots in which the transport through the structure occurs through individual eigenstates of the corresponding closed dot. In particular, at low magnetic ÿelds the characteristic features in the conductance are related to the underlying eigenspectrum shells. When the number of modes in the leads is reduced more detailed structures within the shells due to single eigenlevels becomes discernible. At higher ÿelds Landau level condensation is evident as well as the crossing of levels collapsing to the di erent Landau levels.