Current response of quantum dot modulated by time-dependent external fields

Susumu Adachi; Kazuya Fujimoto; Tsuyoshi Hatano; Yoshimasa Asawa

doi:10.1143/JJAP.34.4298

Current response of quantum dot modulated by time-dependent external fields

Susumu Adachi, Kazuya Fujimoto, Tsuyoshi Hatano, Yoshimasa Asawa

SCI - Physics

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

We study how the dc transport through a semiconductor quantum dot varies when time-dependent external fields are applied. We find (i) the shift of the Coulomb blockade region due to the interband excitation, (ii) the resonant peak structures of the Coulomb oscillation due to the intraband excitation, and (iii) the electron pumping effect in the quantum dot modulated by the microwave field with frequency lower than the level spacing of the quantum dot.

Original language	English
Pages (from-to)	4298-4301
Number of pages	4
Journal	Japanese journal of applied physics
Volume	34
Issue number	8
DOIs	https://doi.org/10.1143/JJAP.34.4298
Publication status	Published - 1995 Aug

Keywords

Current continuity
Electron pumping
Interband excitation
Intraband excitation
Low-frequency modulation
Quantum dot
Shift of Coulomb blockade

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.34.4298

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title = "Current response of quantum dot modulated by time-dependent external fields",

abstract = "We study how the dc transport through a semiconductor quantum dot varies when time-dependent external fields are applied. We find (i) the shift of the Coulomb blockade region due to the interband excitation, (ii) the resonant peak structures of the Coulomb oscillation due to the intraband excitation, and (iii) the electron pumping effect in the quantum dot modulated by the microwave field with frequency lower than the level spacing of the quantum dot.",

keywords = "Current continuity, Electron pumping, Interband excitation, Intraband excitation, Low-frequency modulation, Quantum dot, Shift of Coulomb blockade",

author = "Susumu Adachi and Kazuya Fujimoto and Tsuyoshi Hatano and Yoshimasa Asawa",

year = "1995",

month = aug,

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language = "English",

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journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

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T1 - Current response of quantum dot modulated by time-dependent external fields

AU - Adachi, Susumu

AU - Fujimoto, Kazuya

AU - Hatano, Tsuyoshi

AU - Asawa, Yoshimasa

PY - 1995/8

Y1 - 1995/8

N2 - We study how the dc transport through a semiconductor quantum dot varies when time-dependent external fields are applied. We find (i) the shift of the Coulomb blockade region due to the interband excitation, (ii) the resonant peak structures of the Coulomb oscillation due to the intraband excitation, and (iii) the electron pumping effect in the quantum dot modulated by the microwave field with frequency lower than the level spacing of the quantum dot.

AB - We study how the dc transport through a semiconductor quantum dot varies when time-dependent external fields are applied. We find (i) the shift of the Coulomb blockade region due to the interband excitation, (ii) the resonant peak structures of the Coulomb oscillation due to the intraband excitation, and (iii) the electron pumping effect in the quantum dot modulated by the microwave field with frequency lower than the level spacing of the quantum dot.

KW - Current continuity

KW - Electron pumping

KW - Interband excitation

KW - Intraband excitation

KW - Low-frequency modulation

KW - Quantum dot

KW - Shift of Coulomb blockade

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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 - 8

ER -

Current response of quantum dot modulated by time-dependent external fields

Abstract

Keywords

ASJC Scopus subject areas

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