The enhanced binding energy for biexcitons in InAs quantum dots

MASUMOTO Yasuaki, Yoshida Seitaro, TERADA Yasuhiko, TOMIMOTO Sin-iti, Sakuma Yoshiki

doi:10.1063/1.3554425

Description

<jats:p>We observed that the biexciton binding energy in InAs quantum rhombic disks (QRDs) is enhanced by twice compared with that for InAs quantum dots (QDs) so far reported around 1.24 μm nearby the telecommunication wavelength. The heterodyne-detected four-wave-mixing detected the exciton-biexciton quantum beat superposed on photon echo decay, giving the biexciton binding energy of 3.4 meV to 3 monolayer (ML) InAs QRDs and 4.1 meV to 4 ML InAs QRDs, respectively. The largest biexciton binding energy of 4.1 meV in InAs QDs is ascribed to increased electron-hole overlap in confined geometry with a minimized strain distribution.</jats:p>

Journal

Applied Physics Letters

Applied Physics Letters 98 (6), 061905-, 2011-02

AIP Publishing

Details 詳細情報について

CRID: 1050282677518691712

NII Book ID: AA00543431

DOI: 10.1063/1.3554425

ISSN: 10773118; 00036951

HANDLE: 2241/114022

Web Site: https://tsukuba.repo.nii.ac.jp/records/25166

Text Lang: en

Article Type: journal article

Data Source

IRDB
KAKEN
OpenAIRE

Export

Report a problem