25 citations · 77 across the 5 of their papers we have counts for
5 papers
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…
Characterising superconducting filters using residual microwave background
J. S. Lehtinen, E. Mykkänen, A. Kemppinen +3
A normal metal - superconductor hybrid single-electron trap with tunable barrier is utilized as a tool for spectrum analysis at the extremely low signal levels, using only well fil…
Reducing current noise in cryogenic experiments by vacuum-insulated cables
E. Mykkänen, J. S. Lehtinen, A. Kemppinen +4
We measure the current noise of several cryogenic cables in a pulse tube based dilution refrigerator at frequencies between about 1~mHz and 50~kHz. We show that vibration-induced n…
Long hold times in a two-junction electron trap
A. Kemppinen, S. V. Lotkhov, O. -P. Saira +3
The hold time of a single-electron trap is shown to increase significantly due to suppression of environmentally assisted tunneling events. Using two rf-tight radiation shields…