25 citations · 75 across the 5 of their papers we have counts for
5 papers
Phonon-blocked junction calorimeter
Zhuoran Geng, Joel Hätinen, Emma Mykkänen +2
This study introduces the theory of a microcalorimeter based on phonon-blocked superconducting tunnel junctions, integrating on-chip electron cooling and boundary resistance phonon…
Efficient thermionic operation and phonon isolation by a semiconductor-superconductor junction
Emma Mykkänen, Janne S. Lehtinen, Leif Grönberg +6
Control of heat flux at small length scales is crucial for numerous solid-state devices and systems. In addition to the thermal management of information and communication devices…
Superconducting MoSi nanowires
J. S. Lehtinen, A. Kemppinen, E. Mykkänen +2
We have fabricated disordered superconducting nanowires of molybdenium silicide. A molybdenium nanowire is first deposited on top of silicon, and the alloy is formed by rapid therm…
Strain enhanced electron cooling in a degenerately doped semiconductor
M. J. Prest, J. T. Muhonen, M. Prunnila +9
Enhanced electron cooling is demonstrated in a strained-silicon/superconductor tunnel junction refrigerator of volume 40 um^3. The electron temperature is reduced from 300 mK to 17…
Strain control of electron-phonon energy loss rate in many-valley semiconductors
J. T. Muhonen, M. J. Prest, M. Prunnila +8
We demonstrate significant modification of the electron-phonon energy loss rate in a many-valley semiconductor system due to lattice mismatch induced strain. We show that the therm…