Projects per year
We have employed noise thermometry for investigations of thermal relaxation between the electrons and the substrate in nanowires patterned from 40-nm-thick titanium film on top of silicon wafers covered by a native oxide. By controlling the electronic temperature (Formula presented.) by Joule heating at the base temperature of a dilution refrigerator, we probe the electron–phonon coupling and the thermal boundary resistance at temperatures (Formula presented.)–3 K. Using a regular (Formula presented.)-dependent electron–phonon coupling of clean metals and a (Formula presented.)-dependent interfacial heat flow, we deduce a small contribution for the direct energy transfer from the titanium electrons to the substrate phonons due to inelastic electron-boundary scattering.
- Electron-phonon coupling
- Electronic Kapitza conductance
- Kapitza resistance
- Shot noise thermometry
- Thermal contact
- Thermal relaxation
FingerprintDive into the research topics of 'Thermal Relaxation in Titanium Nanowires: Signatures of Inelastic Electron-Boundary Scattering in Heat Transfer'. Together they form a unique fingerprint.
Thanniyil Sebastian, A., Kaikkonen, J., Kamada, M., Manninen, J., Tan, Z., Will, M., Todoshchenko, I., Hakonen, P., Zavyalov, V., Sergeicheva, E., Song, X., Kumar, M., Pandey, P., Korhonen, K., Haque, M., Perelshtein, M., Kirsanov, N. & Tong, F.
05/11/2015 → 31/12/2021
Project: EU: ERC grants
01/01/2015 → 31/12/2017
Project: Academy of Finland: Other research funding