Electrical Detection of Spin Pumping due to the Precessing Magnetization of a Single Ferromagnet
| Autor: | S. M. Watts, M. Sladkov, Marius V. Costache, van der Caspar Wal, van Bart Wees |
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| Přispěvatelé: | Physics of Nanodevices, Surfaces and Thin Films, Zernike Institute for Advanced Materials |
| Rok vydání: | 2006 |
| Předmět: |
Spin pumping
Materials science Condensed Matter - Mesoscale and Nanoscale Physics Spin polarization Condensed matter physics FOS: Physical sciences General Physics and Astronomy Resonance RESONANCE Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Ferromagnetic resonance VALVE Condensed Matter::Materials Science Magnetization ROOM-TEMPERATURE Ferromagnetism Spin wave METAL Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Condensed Matter::Strongly Correlated Electrons INJECTION ACCUMULATION Spin-½ |
| Zdroj: | Physical Review Letters, 97(21):216603, art.-216603. AMER PHYSICAL SOC |
| ISSN: | 1079-7114 0031-9007 |
| DOI: | 10.1103/physrevlett.97.216603 |
| Popis: | We report direct electrical detection of spin pumping, using a lateral normal-metal/ferromagnet/normal-metal device, where a single ferromagnet in ferromagnetic resonance pumps spin-polarized electrons into the normal metal, resulting in spin accumulation. The resulting backflow of spin current into the ferromagnet generates a dc voltage due to the spin-dependent conductivities of the ferromagnet. By comparing different contact materials (Al and/or Pt), we find, in agreement with theory, that the spin-related properties of the normal metal dictate the magnitude of the dc voltage. |
| Databáze: | OpenAIRE |
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