Molecular enhancement of ferromagnetism in GaAs∕GaMnAs heterostructures
| Autor: | Elisabeth G. Gwinn, Ron Naaman, Itai Carmeli, S. G. Ray, T. C. Kreutz, FL Francisco Bloom, Cheyne Scoby, Arthur C. Gossard |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Condensed matter physics Magnetism Heterojunction Magnetic semiconductor Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Magnetization Magnetic anisotropy Ferromagnetism Chemisorption Monolayer Physics::Chemical Physics |
| Zdroj: | Applied Physics Letters. 89:112508 |
| ISSN: | 1077-3118 0003-6951 |
| Popis: | The authors investigate effects of chemisorption of polar organic molecules onto ferromagnetic GaAs∕GaMnAs heterostructures. The chemisorbed heterostructures exhibit striking anisotropic enhancement of the magnetization, while GaAs substrates that are physisorbed with the same molecules show no change in magnetic properties. Thus the enhanced magnetism of the chemisorbed heterostructures reflects changes in spin alignment that arise from surface bonding of the organic monolayer. |
| Databáze: | OpenAIRE |
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