Spin coherence of electrons and holes in ZnSe‐based quantum wells studied by pump–probe Kerr rotation. Issue 9 (16th January 2014)

• Record Type: Journal Article
• Authors: Zhukov, E. A.; Yakovlev, D. R.; Schwan, A.; Yugov, O. A.; Waag, A.; Molenkamp, L. W.; Bayer, M.; König, Jürgen; Oestreich, Michael
• Is Part Of: Physica status solidi. Volume 251:Issue 9(2014:Sep.)
• Page Start: 1872
• Page End: 1880
• Publication Date: 2014-01-16
• Subjects: Solid state physics -- Periodicals; Solids -- Periodicals; Atomic structure -- Periodicals; 530.41
• DOI: 10.1002/pssb.201350233
• Languages: English
• ISSNs: 0370-1972

Abstract

<abstract abstract-type="main" xml:lang="en"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="pssb201350233-sec-0001" sec-type="section"> <p>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 <italic>g</italic>‐factors tensor are evaluated for the electrons and heavy‐holes, revealing strong anisotropy for the heavy‐holes.</p> </sec> </abstract>