1. Scanning Thermal Microscopy and Ballistic Phonon Transport in Lateral Spin Valves.
- Author
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Stefanou, G., Menges, F., Boehm, B., Moran, K. A., Adams, J., Ali, M., Rosamond, M. C., Gotsmann, B., Allenspach, R., Burnell, G., and Hickey, B. J.
- Subjects
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SPIN valves , *BALLISTIC conduction , *THERMOELECTRIC apparatus & appliances , *NANOELECTROMECHANICAL systems , *MICROSCOPY , *SKYRMIONS - Abstract
Using scanning thermal microscopy, we have mapped the spatial distribution of temperatures in an operating nanoscale device formed from a magnetic injector, an Ag connecting wire, and a magnetic detector. An analytical model explained the thermal diffusion over the measured temperature range (2-300 K) and injector-detector separation (400-3000 nm). The characteristic diffusion lengths of the Peltier and Joule heat differ remarkably below 60 K, a fact that can be explained by the onset of ballistic phonon heat transfer in the substrate. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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