OPTICALLY DETECTED SPIN-GLASS TRANSITION IN SUPERLATTICES AND QUANTUM-WELLS OF DILUTED MAGNETIC SEMICONDUCTORS

Authors
DAHL M MERGLER A SAWICKI M LITZ T WAAG A GERHARD T KARCZEWSKI G WOJTOWICZ T KOSSUT J
Citation
M. Dahl et al., OPTICALLY DETECTED SPIN-GLASS TRANSITION IN SUPERLATTICES AND QUANTUM-WELLS OF DILUTED MAGNETIC SEMICONDUCTORS, Journal of crystal growth, 159(1-4), 1996, pp. 1009-1013
Citations number
13
Categorie Soggetti
Crystallography
Journal title
Journal of crystal growth → ACNP
ISSN journal
00220248
Volume
159
Issue
1-4
Year of publication
1996
Pages
1009 - 1013
Database
ISI
SICI code
0022-0248(1996)159:1-4<1009:ODSTIS>2.0.ZU;2-5
Abstract
We report on optically detected spin-glass freezing in CdTe/(Cd,Mn)Te superlattices and (Cd,Mn)Te/(Cd,Mg)Te single quantum wells. The result s on the first are compared with SQUID magnetometry on the same sample s. The frequency dependence of the spin-glass freezing temperature for a superlattice was measured over the range 4 Hz-32 kHz and analyzed i n terms of a power law. The result for the exponent z nu = 6.3+/-1.5 i s significantly lower than values reported for bulk material.