Control and observation of excitonic motion in modulation-doped (Cd,Mn)Te quantum well

Fumiyoshi Takano; Takashi Tokizaki; Hiro Akinaga; Shinji Kuroda; Koki Takita

doi:10.1117/12.584210

13 April 2005 Control and observation of excitonic motion in modulation-doped (Cd,Mn)Te quantum well (Invited Paper)

Fumiyoshi Takano, Takashi Tokizaki, Hiro Akinaga, Shinji Kuroda, Koki Takita

Proceedings Volume 5725, Ultrafast Phenomena in Semiconductors and Nanostructure Materials IX; (2005) https://doi.org/10.1117/12.584210
Event: Integrated Optoelectronic Devices 2005, 2005, San Jose, California, United States

Abstract

Time- and spatial-resolved circular-polarized photoluminescence measurement was performed on an n-type modulation-doped (Cd,Mn)Te quantum well. The spatial extent of PL in the right circular polarization (RCP) got broad with an increase in magnetic field, although, for the left circular polarization (LCP), the extent showed a tendency to contract with the magnetic field. This difference between RCP and LCP is considered to be resulting from the difficulty difference in the formation of a negatively-charged exciton X^-. We successfully observed the time-development of an electric-field-induced drift of X^-. The drift of X^- was found to be promoted by the magnetic fields. This is considered to originate in the suppression of an exciton-magnetic-polaron formation or/and the decrease of a simple spin scattering under the magnetic fields. The scattering time of X^- was found to be about the same value as that of the two-dimensional conduction electron. This is the same result as the case of an n-type modulation-doped GaAs quantum well which had been already reported by other group (See References 4 and 5).

Citation Download Citation

Fumiyoshi Takano, Takashi Tokizaki, Hiro Akinaga, Shinji Kuroda, and Koki Takita "Control and observation of excitonic motion in modulation-doped (Cd,Mn)Te quantum well (Invited Paper)", Proc. SPIE 5725, Ultrafast Phenomena in Semiconductors and Nanostructure Materials IX, (13 April 2005); https://doi.org/10.1117/12.584210

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available