Nuclear spin pumping under resonant optical excitation in a quantum dot

Makhonin, M. N. and Tartakovskii, A. I. and Ebbens, A. and Skolnick, M. S. and Russell, A. and Falko, Vladimir and Hopkinson, M. (2008) Nuclear spin pumping under resonant optical excitation in a quantum dot. Applied Physics Letters, 93 (7). -. ISSN 0003-6951

Full text not available from this repository.

Abstract

We demonstrate nuclear spin pumping in a single InGaAs/GaAs dot embedded in a p-i-n diode in the regime of resonant optical excitation of spin-polarized electron-hole pairs in the lowest energy states of the dot. A nuclear spin pumping mechanism is proposed relevant to the regime of high electric field where carriers escape from the dot by tunneling. The degree of nuclear spin polarization is shown to increase strongly with the applied electric field, controlling the carrier tunneling from the dot, since at low electric fields the dot is blocked for re-excitation due to the slow hole escape.

Item Type:
Journal Article
Journal or Publication Title:
Applied Physics Letters
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
57003
Deposited By:
Deposited On:
16 Aug 2012 15:56
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:03