Physics – Condensed Matter – Materials Science
Scientific paper
2004-12-15
Physics
Condensed Matter
Materials Science
10 pages, 4 figures, accepted by Applied Physics Letters
Scientific paper
10.1063/1.1855427
The magnetic properties of the ferromagnetic semiconductor In0.98Mn0.02As were characterized by x-ray absorption spectroscopy and x-ray magnetic circular dichroism. The Mn exhibits an atomic-like L2,3 absorption spectrum that indicates that the 3d states are highly localized. In addition, a large dichroism at the Mn L2,3 edge was observed from 5-300 K at an applied field of 2T. A calculated spectrum assuming atomic Mn2+ yields the best agreement with the experimental InMnAs spectrum. A comparison of the dichroism spectra of MnAs and InMnAs show clear differences suggesting that the ferromagnetism observed in InMnAs is not due to hexagonal MnAs clusters. The temperature dependence of the dichroism indicates the presence of two ferromagnetic species, one with a transition temperature of 30 K and another with a transition temperature in excess of 300 K. The dichroism spectra are consistent with the assignment of the low temperature species to random substitutional Mn and the high temperature species to Mn near-neighbor pairs.
Chiu P. T.
Freeland John W.
Keavney David J.
Wessels Bruce W.
No associations
LandOfFree
Local Environment of Ferromagnetically Ordered Mn in Epitaxial InMnAs does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Local Environment of Ferromagnetically Ordered Mn in Epitaxial InMnAs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Local Environment of Ferromagnetically Ordered Mn in Epitaxial InMnAs will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-92176