Single-dot spectroscopy via elastic single-electron tunneling through a pair of coupled quantum dots

T. Ota, K. Ono, M. Stopa, T. Hatano, S. Tarucha, H. Z. Song, Y. Nakata, T. Miyazawa, T. Ohshima, N. Yokoyama

研究成果: Article査読

52 被引用数 (Scopus)

抄録

The electronic structure of a single self-assembled InAs quantum dot was investigated with the precise manipulation of the energy levels of the dots. Elastic single-electron tunneling was probed through a pair of weakly coupled quantum dots. A double layer of InAs dots embedded in a sub-micron size pillar was employed and a single vertical pair of dots was isolated by depleting the structure with a side gate. The nonlinear threshold voltage behavior provided electronic addition energies in the region below pinch-off voltage, which was similar to Coulomb blockade oscillation. Fock-Darwin spectra of the s and p shells was provided by the evolution of the shell addition spectrum with magnetic field.

本文言語English
論文番号066801
ページ(範囲)066801-1-066801-4
ジャーナルPhysical review letters
93
6
DOI
出版ステータスPublished - 2004 8 6

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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