We report x-ray magnetic circular dichroism and superconducting quantum interference device magnetometry experiments to study magnetic order and coupling in thin Fe/(Ga,Mn)As(100) films. We observe induced magnetic order in the (Ga,Mn)As layer that extends over more than 2 nm, even at room temperature. We find spectroscopic evidences of a hybridized d configuration of Mn atoms in Fe/(Ga,Mn)As, with negligible Mn diffusion and/or MnFe intermixing. We show by experiment as well as by theory that the magnetic moment of the Mn ions couples antiparallel to the moment of the Fe overlayer.

Evidence for a Magnetic Proximity Effect up to Room Temperature at Fe/Ga-Mn-As Interfaces / F., MACCHEROZZI; M., SPERL; G., PANACCIONE; J., MINAR; S., POLESYA; H., EBERT; U., WURSTBAUER; M., HOCHSTRASSER; ROSSI, Giorgio; G., WOLTERSDORF; W., WEGSCHEIDER; AND C. H., BACK. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 101:26(2008), pp. 267201-267204. [10.1103/PhysRevLett.101.267201]

Evidence for a Magnetic Proximity Effect up to Room Temperature at Fe/Ga-Mn-As Interfaces

ROSSI, Giorgio;
2008

Abstract

We report x-ray magnetic circular dichroism and superconducting quantum interference device magnetometry experiments to study magnetic order and coupling in thin Fe/(Ga,Mn)As(100) films. We observe induced magnetic order in the (Ga,Mn)As layer that extends over more than 2 nm, even at room temperature. We find spectroscopic evidences of a hybridized d configuration of Mn atoms in Fe/(Ga,Mn)As, with negligible Mn diffusion and/or MnFe intermixing. We show by experiment as well as by theory that the magnetic moment of the Mn ions couples antiparallel to the moment of the Fe overlayer.
101
26
267201
267204
Evidence for a Magnetic Proximity Effect up to Room Temperature at Fe/Ga-Mn-As Interfaces / F., MACCHEROZZI; M., SPERL; G., PANACCIONE; J., MINAR; S., POLESYA; H., EBERT; U., WURSTBAUER; M., HOCHSTRASSER; ROSSI, Giorgio; G., WOLTERSDORF; W., WEGSCHEIDER; AND C. H., BACK. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 101:26(2008), pp. 267201-267204. [10.1103/PhysRevLett.101.267201]
F., Maccherozzi; M., Sperl; G., Panaccione; J., Minar; S., Polesya; H., Ebert; U., Wurstbauer; M., Hochstrasser; Rossi, Giorgio; G., Woltersdorf; W., Wegscheider; AND C. H., Back
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/608039
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