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Publication Citation: Magnetic Properties of Co/GaAs(110)

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Author(s): T Monchesky; John Unguris;
Title: Magnetic Properties of Co/GaAs(110)
Published: December 04, 2006
Abstract: We observed three magnetic states of an ultrathin, atomically well-ordered Co film grown on a cleaved GaAs(110) substrate. For a Co thickness less than 3.4 monolayers (ML), we find a ferromagnetically dead layer associated with the formation of interfacial Co2GaAs. For thicknesses greater than 4.1 ML, the Co film grows with a bcc structure that contains 6 at. % Ga. The films are ferromagnetic with an easy axis along the [110] direction. This magnetic state persists up to a thickness of 7 ML, at which point an abrupt in-plane spin-reorientation transition reorients the magnetization along the [001] direction.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 74
Issue: 24
Pages: pp. 241301-1 - 241301-4
Research Areas: Nanomagnetics