Magnetic moment of mn in the ferromagnetic semiconductor (Ga0.98Mn0.02)As

H. Ohldag, V. Solinus, F. U. Hillebrecht, J. B. Goedkoop, M. Finazzi, F. Matsukura, H. Ohno

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90 Citations (Scopus)

Abstract

We have studied the quasibinary ferromagnetic semiconductor (Ga0.98Mn0.02)As by magnetic circular dichroism in x-ray absorption. We find a richly structured Mn absorption spectrum typical for localized 3d electrons. An analysis of the magnetization-averaged and dichroism line shapes shows a local Mn moment of 4.6μB, which is close to the Hund's rule moment for the half-filled 3d shell. The magnitude of the dichroism reveals that only about 1/7 of the Mn atoms participate in the ferromagnetic order. Our experiment does not show a distinction between the ferro- and paramagnetic Mn atoms.

Original languageEnglish
Pages (from-to)2928-2930
Number of pages3
JournalApplied Physics Letters
Volume76
Issue number20
DOIs
Publication statusPublished - 2000 May 15

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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