Abstract
A spin current carries spin angular momentum in a spintronics device. Its interaction with a magnetic nanostructure not only gives rise to spin-dependent transport but also excites dynamics in the magnetic state. Unlike the spin-polarized electrical current, a pure spin current is useful for both fundamental and applied research because neither Oersted fields nor electrical current-related spurious effects are produced. Nonlocal electrical spin injection is a feasible way to produce the pure spin current. Here we demonstrate that the nonlocal spin valve signal is increased by an order of magnitude by improving the interface quality in a new device structure using a clean, in situ fabrication process. The generated pure spin current enables the magnetization reversal of a nanomagnet as efficiently as electrical current-induced magnetization switching. These results will open the door towards the realization of a pure-spin-current-driven device.
Original language | English |
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Title of host publication | Spintronics |
Volume | 7036 |
DOIs | |
Publication status | Published - Nov 24 2008 |
Externally published | Yes |
Event | Spintronics - San Diego, CA, United States Duration: Aug 10 2008 → Aug 14 2008 |
Other
Other | Spintronics |
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Country/Territory | United States |
City | San Diego, CA |
Period | 8/10/08 → 8/14/08 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering