Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact

Yuichi Ochiai, Yohei Ujiie, Noboru Yumoto, Shigeki Harada, Takahiro Morimoto, Nobuyuki Aoki, Jonathan P. Bird, David K. Ferry

Research output: Contribution to journalArticle

Abstract

We have investigated quantum structures, such as narrow wires, single or coupled quantum dots (QDs), and quantum point contact (QPC), in order to clarify the origin of the chaotic and fractal behavior in their transport properties. Chaotic behavior in the electrical transport in QD and QPC has been studied in the low temperature magneto-resistance (MR), and by use of scanning gate microscopy (SGM). The quantum structures are fabricated using hetero-junction semiconductors. The low temperature MR has been measured using a 3He cryostat or dilution refrigerator with magnetic fields up to 8 T. We discuss the relation between the narrow constrictions in these structures and chaotic scatterings observed in the MR and SGM.

Original languageEnglish (US)
Pages (from-to)127-135
Number of pages9
JournalProgress of Theoretical Physics Supplement
Issue number166
StatePublished - 2007

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quantum dots
microscopy
semiconductor junctions
scanning
refrigerators
cryostats
dilution
fractals
constrictions
transport properties
wire
scattering
magnetic fields

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Ochiai, Y., Ujiie, Y., Yumoto, N., Harada, S., Morimoto, T., Aoki, N., ... Ferry, D. K. (2007). Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact. Progress of Theoretical Physics Supplement, (166), 127-135.

Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact. / Ochiai, Yuichi; Ujiie, Yohei; Yumoto, Noboru; Harada, Shigeki; Morimoto, Takahiro; Aoki, Nobuyuki; Bird, Jonathan P.; Ferry, David K.

In: Progress of Theoretical Physics Supplement, No. 166, 2007, p. 127-135.

Research output: Contribution to journalArticle

Ochiai, Y, Ujiie, Y, Yumoto, N, Harada, S, Morimoto, T, Aoki, N, Bird, JP & Ferry, DK 2007, 'Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact', Progress of Theoretical Physics Supplement, no. 166, pp. 127-135.
Ochiai Y, Ujiie Y, Yumoto N, Harada S, Morimoto T, Aoki N et al. Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact. Progress of Theoretical Physics Supplement. 2007;(166):127-135.
Ochiai, Yuichi ; Ujiie, Yohei ; Yumoto, Noboru ; Harada, Shigeki ; Morimoto, Takahiro ; Aoki, Nobuyuki ; Bird, Jonathan P. ; Ferry, David K. / Chaotic behavior in the magneto-resistance of quantum dot and quantum point contact. In: Progress of Theoretical Physics Supplement. 2007 ; No. 166. pp. 127-135.
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