Premium
Spin coherence of electrons and holes in ZnSe‐based quantum wells studied by pump–probe Kerr rotation
Author(s) -
Zhukov E. A.,
Yakovlev D. R.,
Schwan A.,
Yugov O. A.,
Waag A.,
Molenkamp L. W.,
Bayer M.
Publication year - 2014
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201350233
Subject(s) - dephasing , electron , condensed matter physics , spin (aerodynamics) , physics , quantum well , coherence (philosophical gambling strategy) , atomic physics , quantum mechanics , laser , thermodynamics
Spin coherence of resident electrons and holes is measured in ZnSe‐based quantum wells by means of time‐resolved Kerr rotation technique. At a temperature of 1.8 K spin dephasing time for localized electrons can be as long as 33 ns, and for holes of 0.8 ns. Electron spin precession is clearly observed in a wide temperature range up to 230 K. The electron spin dephasing becomes much shorter of 0.2 ns for the quantum well with a high‐density electron gas. Using vector magnet all components of the g ‐factors tensor are evaluated for the electrons and heavy‐holes, revealing strong anisotropy for the heavy‐holes.