Evidence for a Magnetic Proximity Effect up to Room Temperature at Fe/(Ga,Mn)As Interfaces
| Autor: | Maccherozzi, F., Sperl, M., Panaccione, G., Minar, J., Polesya, S., Ebert, H., Wurstbauer, U., Hochstrasser, M., Rossi, Giorgio, Woltersdorf, G., Wegscheider, W., Back, AND C. H. |
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| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Physical review letters info:cnr-pdr/source/autori:Maccherozzi, F; Sperl, M; Panaccione, G; Minar, J; Polesya, S; Ebert, H; Wurstbauer, U; Hochstrasser, M; Rossi, G; Woltersdorf, G; Wegscheider, W; Back, CH/titolo:Evidence for a Magnetic Proximity Effect up to Room Temperature at Fe%2F(Ga,Mn)As Interfaces/doi:10.1103%2FPhysRevLett.101.267201/rivista:Physical review letters (Print)/anno:2008/pagina_da:/pagina_a:/intervallo_pagine:/volume:101 |
| DOI: | 10.1103/PhysRevLett.101.267201 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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