Scanning gate imaging of transport within an InGaAs QPC

N. Aoki, C. R. Da Cunha, T. Morimoto, R. Akis, D. K. Ferry, Y. Ochiai

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

1 Citation (Scopus)

Abstract

Quantum transport in a quantum point contact of InGaAs has been successfully visualized using a low temperature scanning gate microcopy. The images involves three kinds of features: (i) conductance fluctuations due to quantum interference, (ii) characteristic peaks corresponding to the propagating mode, (iii) a static-peak pattern observed just before the pinch-off condition. Furthermore, the fluctuations in the image reveal that the area distribution has a peak at around 2.5 × 104 nm2 and follows Gaussian unitary ensemble. It is consistent with a distribution of frequency components of the magneto conductance fluctuations of the quantum point contact.

Original languageEnglish (US)
Title of host publicationAIP Conference Proceedings
Pages715-716
Number of pages2
Volume893
DOIs
StatePublished - 2007
Event28th International Conference on the Physics of Semiconductors, ICPS 2006 - Vienna, Austria
Duration: Jul 24 2006Jul 28 2006

Other

Other28th International Conference on the Physics of Semiconductors, ICPS 2006
CountryAustria
CityVienna
Period7/24/067/28/06

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scanning
interference

Keywords

  • Quantum interference
  • Quantum point contact
  • Scanning gate microscopy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Aoki, N., Da Cunha, C. R., Morimoto, T., Akis, R., Ferry, D. K., & Ochiai, Y. (2007). Scanning gate imaging of transport within an InGaAs QPC. In AIP Conference Proceedings (Vol. 893, pp. 715-716) https://doi.org/10.1063/1.2730090

Scanning gate imaging of transport within an InGaAs QPC. / Aoki, N.; Da Cunha, C. R.; Morimoto, T.; Akis, R.; Ferry, D. K.; Ochiai, Y.

AIP Conference Proceedings. Vol. 893 2007. p. 715-716.

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

Aoki, N, Da Cunha, CR, Morimoto, T, Akis, R, Ferry, DK & Ochiai, Y 2007, Scanning gate imaging of transport within an InGaAs QPC. in AIP Conference Proceedings. vol. 893, pp. 715-716, 28th International Conference on the Physics of Semiconductors, ICPS 2006, Vienna, Austria, 7/24/06. https://doi.org/10.1063/1.2730090
Aoki N, Da Cunha CR, Morimoto T, Akis R, Ferry DK, Ochiai Y. Scanning gate imaging of transport within an InGaAs QPC. In AIP Conference Proceedings. Vol. 893. 2007. p. 715-716 https://doi.org/10.1063/1.2730090
Aoki, N. ; Da Cunha, C. R. ; Morimoto, T. ; Akis, R. ; Ferry, D. K. ; Ochiai, Y. / Scanning gate imaging of transport within an InGaAs QPC. AIP Conference Proceedings. Vol. 893 2007. pp. 715-716
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