Projekteja vuodessa
Abstrakti
We observe a crossover fromelectron-phonon (e-ph) coupling limited energy relaxation to that governed by thermal boundary resistance (phonon-phonon coupling, ph-ph) in copper films at subkelvin temperatures. Our measurement yields a quantitative picture of heat currents, in terms of temperature dependences and magnitudes, in both e-ph and pp limited regimes, respectively. We show that by adding a third layer in between the copper film and the substrate, the thermal boundary resistance is increased fourfold, consistent with an assumed series connection of thermal resistances.
| Alkuperäiskieli | Englanti |
|---|---|
| Artikkeli | 024051 |
| Sivut | 1-6 |
| Sivumäärä | 6 |
| Julkaisu | Physical Review Applied |
| Vuosikerta | 12 |
| Numero | 2 |
| DOI - pysyväislinkit | |
| Tila | Julkaistu - 23 elok. 2019 |
| OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Sormenjälki
Sukella tutkimusaiheisiin 'Crossover between Electron-Phonon and Boundary-Resistance Limits to Thermal Relaxation in Copper Films'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.-
SQH: Superconducting quantum heat engines and refrigerators
Pekola, J., Karimi, B., Singh, S., Blanchet, F., Peltonen, J., Subero Rengel, D., Upadhyay, R., Gubaydullin, A., Wang, L., Chang, Y., Mäkinen, I., Marín Suárez, M., Thomas, G., Lvov, D., Mannila, E., Senior, J., Strelnikov, A., Chiang, K., Lemziakov, S., Satrya, C., Chen, Z., Serrati, E. & Praks, E.
27/09/2017 → 30/09/2023
Projekti: EU: ERC grants
-
QTF: Kvanttiteknologian huippuyksikkö
Pekola, J., Blanchet, F., Golubev, D., Maillet, O., Marín Suárez, M., Mannila, E. & Senior, J.
01/01/2018 → 31/12/2020
Projekti: Academy of Finland: Other research funding