Magnetization measurements of magnetic two-dimensional electron gases

Authors
Harris, JGE Knobel, R Maranowski, KD Gossard, AC Samarth, N Awschalom, DD
Citation
Jge. Harris et al., Magnetization measurements of magnetic two-dimensional electron gases, PHYS REV L, 86(20), 2001, pp. 4644-4647
Citations number
24
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
86
Issue
20
Year of publication
2001
Pages
4644 - 4647
Database
ISI
SICI code
0031-9007(20010514)86:20<4644:MMOMTE>2.0.ZU;2-8
Abstract
We directly measure the magnetization of both the conduction electrons and Mn2+ ions in (Zn,Cd,Mn)Se two-dimensional electron gases (2DEGs) by integra ting them into ultrasensitive micromechanical magnetometers. The interplay between spin and orbital energy in these magnetic 2DEGs causes Landau level degeneracies at the Fermi energy. These Landau level crossings result in n ovel features in the de Haas-van Alphen oscillations, which are quantitativ ely reproduced by a simple model.