Selected Publications
- Slippage and Boundary Layer Probed in an Almost Ideal Gas by a Nanomechanical Oscillator
M. Defoort et al., Phys. Rev. Lett. 113, 136101 (2014) - Evidence for the role of normal-state electrons in nanoelectromechanical damping mechanisms at very low temperatures
K.J. Lulla et al., Phys. Rev. Lett. 110, 177206 (2013) - Phase Diagram of the Topological Superfluid 3He Confined in a Nanoscale Slab Geometry
L.V. Levitin et al., Science 340, 841-844 (2013) - Energy and angular momentum balance in wall-bounded quantum turbulence at very low temperatures
J.J. Hosio et al., Nature Commun. 4, 1614 (2013) - Evidence for Helical Nuclear Spin Order in GaAs Quantum Wires
C.P. Scheller et al., Phys. Rev. Lett. 112, 066801 (2013) - Observation of a roton collective mode in a two-dimensional Fermi liquid
H. Godfrin et al., Nature 483, 576 (2012) - The Josephson heat interferometer
F. Giazotto, M.J. Martinez-Perez, Nature 492, 401 (2012)
Acoustic resonances in helium fluids excited by quartz tuning forks
A. Salmela, J. Tuoriniemi, J. RystiOrdinary quartz tuning fork resonators, operated at about 30 or 200 kHz frequency, couple to acoustic first and second sound resonances in helium fluids under certain conditions. We have studied acoustic resonances in supercritical 4He, normal and superfluid 4He, and in isotopic mixtures of helium. Suggestive temperature, pressure, and concentration dependences are given. Furthermore, we propose a thermometric reference point device based on second sound resonances in helium mixtures, and indicate possible differences in the nature of second sound resonances in superfluid 4He and helium mixtures.
J. Low Temp. Phys. 162, 678 (2011)
doi: 10.1007/s10909-010-0246-8