Abstract

We have measured T1 spin lifetimes of a 14 nm modulation-doped (100) GaAs quantum well using a time-resolved pump-probe Kerr rotation technique. The quantum well was selected by tuning the wavelength of the probe laser. T1 lifetimes in excess of 1 Us were measured at 1.5 K and 5.5 T, exceeding the typical T2 lifetimes that have been measured in GaAs and II-VI quantum wells by orders of magnitude. We observed effects from nuclear polarization, which were largely removable by simultaneous nuclear magnetic resonance, along with two distinct lifetimes under some conditions that likely result from probing two differently localized subsets of electrons.

Original Publication Citation

null

Document Type

Peer-Reviewed Article

Publication Date

2012-10-18

Permanent URL

http://hdl.lib.byu.edu/1877/2989

Publisher

American Institute of Physics

Language

English

College

Physical and Mathematical Sciences

Department

Physics and Astronomy

Share

COinS