EXCHANGE INTERACTIONS IN STRAINED QUANTUM-DOT ARRAYS AND POSSIBILITY OF ENGINEERING THEIR MAGNETIC-PROPERTIES

Authors
KHURGIN JB JIN F OBEIDAT A
Citation
Jb. Khurgin et al., EXCHANGE INTERACTIONS IN STRAINED QUANTUM-DOT ARRAYS AND POSSIBILITY OF ENGINEERING THEIR MAGNETIC-PROPERTIES, Superlattices and microstructures, 24(2), 1998, pp. 133-142
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Superlattices and microstructures → ACNP
ISSN journal
07496036
Volume
24
Issue
2
Year of publication
1998
Pages
133 - 142
Database
ISI
SICI code
0749-6036(1998)24:2<133:EIISQA>2.0.ZU;2-1
Abstract
Exchange interactions between the holes confined in arrays of strained quantum dots subject to compressive and tensile strain are shown to l ead to a ferrimagnetic arrangement of magnetic moments. Using the exam ple of strained InxGa1-xAs quantum dots on InP substrate it is shown h ow the magnetic properties of semiconductor material can be engineered without resorting to doping with magnetic ions. The transition temper ature is estimated to be of the order of 25 K. Potential applications in information storage and processing are considered. (C) 1998 Academi c Press.