Wei, Dahai and Obstbaum, Martin and Ribow, Mirko and Back, Christian H. and Woltersdorf, Georg (2014) Spin Hall voltages from a.c. and d.c. spin currents. NATURE COMMUNICATIONS, 5: 3768. ISSN 2041-1723,
Full text not available from this repository. (Request a copy)Abstract
In spin electronics, the spin degree of freedom is used to transmit and store information. To this end the ability to create pure spin currents-that is, without net charge transfer-is essential. When the magnetization vector in a ferromagnet-normal metal junction is excited, the spin pumping effect leads to the injection of pure spin currents into the normal metal. The polarization of this spin current is time-dependent and contains a very small d.c. component. Here we show that the large a.c. component of the spin currents can be detected efficiently using the inverse spin Hall effect. The observed a.c.-inverse spin Hall voltages are one order of magnitude larger than the conventional d.c.-inverse spin Hall voltages measured on the same device. Our results demonstrate that ferromagnet-normal metal junctions are efficient sources of pure spin currents in the gigahertz frequency range.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Back > Group Christian Back |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Nov 2019 15:38 |
| Last Modified: | 14 Nov 2019 15:38 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10357 |
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