✦ LIBER ✦

Transport of coupled double quantum dots in series

✍ Scribed by Naoki Fujita; Fujio Wakaya; Yoshihiko Yuba; Kenji Gamo

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 315 KB
Volume: 7
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(99)00353-7

No coin nor oath required. For personal study only.

✦ Synopsis

Results of transport measurements on double quantum dots in series with a weak mutual coupling are presented. Samples have been obtained by delineating two-dimensional electron gas in modulation-doped AlGaAs=GaAs with independently bias-tunable, 100 nm wide, Schottky-gates formed by an electron beam lithography and a lift-o technique. In the Coulomb-blockade regime, Coulomb oscillations with two di erent periods have been observed, which are probably due to an electrostatic coupling between the remote dot and the bias-sweeping gate. This is conÿrmed from the transport characteristics of isolated single dots and a simple estimation of the charge degeneracy of the system. Clear Coulomb-staircase structures have also been observed in the double-dot system at a limited high-bias condition.

📜 SIMILAR VOLUMES

Phase coherent transport in two coupled

Phase coherent transport in two coupled quantum dots

✍ R.H Blick; A.K Hüttel; A.W Holleitner; E.M Höhberger; H Qin; J Kirschbaum; J Web 📂 Article 📅 2003 🏛 Elsevier Science 🌐 English ⚖ 496 KB

InGaAs quantum dots embedded in DBR-coup

InGaAs quantum dots embedded in DBR-coupled double cavity

✍ T.E. Tzeng; K.Y. Chuang; Y.C. Liu; B.T. Tsuei; E.Y. Lin; T.S. Lay 📂 Article 📅 2011 🏛 Elsevier Science 🌐 English ⚖ 834 KB

Self-assembled InGaAs quantum dots (QDs) embedded in coupled double-cavity structures with an AlAs/GaAs intermediate distributed Bragg reflector (DBR) were grown on GaAs substrates. Two emission peaks from the QDs corresponding to the coupled double-cavity resonant modes were observed in the high re

Electron dynamics in the coupled double

Electron dynamics in the coupled double quantum dots system

✍ P. Parafiniuk; R. Taranko 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 790 KB

We have studied the electron dynamics in different geometrical arrangements of the two coupled double quantum dot structures. Applying the equation of motion method for appropriate correlation functions the occupation probabilities of different quantum dots of the considered system has been theoreti

Transport through quasi-degenerate state

Transport through quasi-degenerate states in coupled quantum dots

✍ J. Fransson; O. Eriksson; I. Sandalov 📂 Article 📅 2004 🏛 Elsevier Science 🌐 English ⚖ 215 KB

Probing the coherent transport through c

Probing the coherent transport through coupled quantum dots

✍ R.H. Blick; D.W. van der Weide; R.J. Haug; K. von Klitzing; K. Eberl 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 154 KB

We investigate the photoconductance through a double quantum dot or 'artificial molecule' induced by a broadband millimeter wave source. This source functions as a heterodyne interferometer, consisting of two nonlinear transmission lines generating harmonic output in the range of 2-400 GHz, and, bei

Hole states in vertically coupled double

Hole states in vertically coupled double Ge/Si quantum dots

✍ A.I. Yakimov; A.A. Bloshkin; A.I. Nikiforov; A.V. Dvurechenskii 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 428 KB

Using a six-band k Á p formalism we investigated the single-particle hole states in the double quantum dots made of two identical, vertically stacked, Ge/Si nanoclusters. The elastic strain due to the lattice mismatch between Ge and Si was included into the problem via Bir-Pikus Hamiltonian. As cons