### Abstract

Ballistic quantum dots have been used in a wide variety of studies ranging from single-electron charging to chaotic systems. However, in open, ballistic quantum dots, the behavior is significantly different. Here, we discuss (1) the observation of regular, periodic fluctuations arising from the existence of stable orbits, (2) the regular and chaotic behavior of coupled dots, and (3) the theory of such dots. The regular orbit properties of these dots are their most stable, generic property, and are clearly reflected in the magnetoresistance. These give rise to periodic fluctuations, which are the result of a very few, periodic orbits within the dot that give rise to scarred wave functions and harmonically related frequencies in the Fourier spectrum. The orbits arise from the role of regular trajectories in the oscillatory density of states and the crucial collimation effects of the quantum point contacts.

Original language | English (US) |
---|---|

Pages (from-to) | 3944-3950 |

Number of pages | 7 |

Journal | Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers |

Volume | 36 |

Issue number | 6 SUPPL. B |

State | Published - Jun 1997 |

### Fingerprint

### Keywords

- Device modeling
- Device physics
- Inhomogeneities
- Quantum dots
- Quantum transport
- Random impurities

### ASJC Scopus subject areas

- Physics and Astronomy (miscellaneous)

### Cite this

*Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers*,

*36*(6 SUPPL. B), 3944-3950.

**Quantum transport in single and multiple quantum dots.** / Ferry, David K.; Bird, Jonathan P.; Akis, Richard; Pivin, David P.; Connolly, Kevin M.; Ishibashi, Koji; Aoyagi, Yoshinobu; Sugano, Takuo; Ochiai, Yuichi.

Research output: Contribution to journal › Article

*Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers*, vol. 36, no. 6 SUPPL. B, pp. 3944-3950.

}

TY - JOUR

T1 - Quantum transport in single and multiple quantum dots

AU - Ferry, David K.

AU - Bird, Jonathan P.

AU - Akis, Richard

AU - Pivin, David P.

AU - Connolly, Kevin M.

AU - Ishibashi, Koji

AU - Aoyagi, Yoshinobu

AU - Sugano, Takuo

AU - Ochiai, Yuichi

PY - 1997/6

Y1 - 1997/6

N2 - Ballistic quantum dots have been used in a wide variety of studies ranging from single-electron charging to chaotic systems. However, in open, ballistic quantum dots, the behavior is significantly different. Here, we discuss (1) the observation of regular, periodic fluctuations arising from the existence of stable orbits, (2) the regular and chaotic behavior of coupled dots, and (3) the theory of such dots. The regular orbit properties of these dots are their most stable, generic property, and are clearly reflected in the magnetoresistance. These give rise to periodic fluctuations, which are the result of a very few, periodic orbits within the dot that give rise to scarred wave functions and harmonically related frequencies in the Fourier spectrum. The orbits arise from the role of regular trajectories in the oscillatory density of states and the crucial collimation effects of the quantum point contacts.

AB - Ballistic quantum dots have been used in a wide variety of studies ranging from single-electron charging to chaotic systems. However, in open, ballistic quantum dots, the behavior is significantly different. Here, we discuss (1) the observation of regular, periodic fluctuations arising from the existence of stable orbits, (2) the regular and chaotic behavior of coupled dots, and (3) the theory of such dots. The regular orbit properties of these dots are their most stable, generic property, and are clearly reflected in the magnetoresistance. These give rise to periodic fluctuations, which are the result of a very few, periodic orbits within the dot that give rise to scarred wave functions and harmonically related frequencies in the Fourier spectrum. The orbits arise from the role of regular trajectories in the oscillatory density of states and the crucial collimation effects of the quantum point contacts.

KW - Device modeling

KW - Device physics

KW - Inhomogeneities

KW - Quantum dots

KW - Quantum transport

KW - Random impurities

UR - http://www.scopus.com/inward/record.url?scp=0043278278&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0043278278&partnerID=8YFLogxK

M3 - Article

VL - 36

SP - 3944

EP - 3950

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 6 SUPPL. B

ER -