Quantum interference on electron wave spreading over a coupled dot

Nobuyuki Aoki, Daisuke Onishi, Yoshikazu Iwase, Kohji Ishibashi, Jonathan P. Bird, David K. Ferry, Yuichi Ochiai

Research output: Contribution to journalArticle

Abstract

The characteristics of the conductance fluctuations, observed in the low-temperature magnetoresistance of an open quantum-dot molecule formed from a pair of split-gate quantum dots, have been studied. The evolution of these fluctuations suggests a decrease in the typical area for coherent interference with decreasing the coupling strength between the two dot. We discuss this behavior in terms of a transition from multi- to single-dot interference as a function of the inter-dot coupling. Moreover, an existence of interference trajectories which were independent of the dot coupling was also found in our analysis.

Original languageEnglish (US)
Pages (from-to)89-90
Number of pages2
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume18
Issue number1-3
DOIs
StatePublished - May 2003

Fingerprint

Semiconductor quantum dots
interference
Electrons
Magnetoresistance
quantum dots
electrons
Trajectories
Molecules
trajectories
Temperature
molecules

Keywords

  • Coupled dot
  • Low temperature
  • Magnetoconductance
  • Quantum interference
  • Quantum-dot molecule

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Aoki, N., Onishi, D., Iwase, Y., Ishibashi, K., Bird, J. P., Ferry, D. K., & Ochiai, Y. (2003). Quantum interference on electron wave spreading over a coupled dot. Physica E: Low-Dimensional Systems and Nanostructures, 18(1-3), 89-90. https://doi.org/10.1016/S1386-9477(02)00995-5

Quantum interference on electron wave spreading over a coupled dot. / Aoki, Nobuyuki; Onishi, Daisuke; Iwase, Yoshikazu; Ishibashi, Kohji; Bird, Jonathan P.; Ferry, David K.; Ochiai, Yuichi.

In: Physica E: Low-Dimensional Systems and Nanostructures, Vol. 18, No. 1-3, 05.2003, p. 89-90.

Research output: Contribution to journalArticle

Aoki, N, Onishi, D, Iwase, Y, Ishibashi, K, Bird, JP, Ferry, DK & Ochiai, Y 2003, 'Quantum interference on electron wave spreading over a coupled dot', Physica E: Low-Dimensional Systems and Nanostructures, vol. 18, no. 1-3, pp. 89-90. https://doi.org/10.1016/S1386-9477(02)00995-5
Aoki, Nobuyuki ; Onishi, Daisuke ; Iwase, Yoshikazu ; Ishibashi, Kohji ; Bird, Jonathan P. ; Ferry, David K. ; Ochiai, Yuichi. / Quantum interference on electron wave spreading over a coupled dot. In: Physica E: Low-Dimensional Systems and Nanostructures. 2003 ; Vol. 18, No. 1-3. pp. 89-90.
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