Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Maasilta, Ilari"'
Autor:
Ruhtinas, Aki, Maasilta, Ilari J.
We demonstrate a direct writing method for the fabrication of planar Josephson junctions from high quality superconducting niobium titanium nitride (NbTiN) thin films, by creating local disorder using focused He-ion beam irradiation in a helium ion m
Externí odkaz:
http://arxiv.org/abs/2303.17348
Autor:
Geng, Zhuoran, Maasilta, Ilari J.
In contradictin to the common concept that acoustic phonons can only travel inside a material medium, they can in fact "tunnel" across a vacuum gap with the help of piezoelectricity, transmitting a significantly stronger heat flux than that of blackb
Externí odkaz:
http://arxiv.org/abs/2303.05084
Autor:
Geng, Zhuoran, Hijano, Alberto, Ilic, Stefan, Ilyn, Maxim, Maasilta, Ilari J., Monfardini, Alessandro, Spies, Maria, Strambini, Elia, Virtanen, Pauli, Calvo, Martino, Gonzalez-Orellana, Carmen, Helenius, Ari P., Khorshidian, Sara, de Araujo, Clodoaldo I. L., Levy-Bertrand, Florence, Rogero, Celia, Giazotto, Francesco, Bergeret, F. Sebastián, Heikkilä, Tero T.
We review the use of hybrid thin films composed of superconductors and ferromagnets for creating non-reciprocal electronic components and self-biased detectors of electromagnetic radiation. We begin by introducing the theory behind these effects, as
Externí odkaz:
http://arxiv.org/abs/2302.12732
Autor:
Geng, Zhuoran, Maasilta, Ilari J.
Publikováno v:
Commun Phys 6, 178 (2023)
When two piezoelectric solids are placed in close proximity, acoustic waves (phonons) can "tunnel" across a vacuum gap transmitting energy between the two solids. Here, we demonstrate analytically that not only is such a phenomenon possible, but that
Externí odkaz:
http://arxiv.org/abs/2209.08287
Autor:
Tavakoli, Adib, Lulla, Kunal J., Puurtinen, Tuomas, Maasilta, Ilari, Collin, Eddy, Saminadayar, Laurent, Bourgeois, Olivier
Specific heat of phonon cavities is investigated in order to analyse the effect of phonon confinement on thermodynamic properties. The specific heat of free standing very thin SiN membranes in the low dimensional limit is measured down to very low te
Externí odkaz:
http://arxiv.org/abs/2206.07383
Autor:
Geng, Zhuoran, Maasilta, Ilari J.
The superconductor-ferromagnet thermoelectric detector (SFTED) is a novel ultrasensitive radiation detector based on the giant thermoelectric effect in superconductorferromagnet tunnel junctions. We demonstrate analytical models and solutions in the
Externí odkaz:
http://arxiv.org/abs/2206.02513
Autor:
Geng, Zhuoran, Maasilta, Ilari J.
It is not widely appreciated that an acoustic wave can "jump" or "tunnel" across a vacuum gap between two piezoelectric solids, nor has the general case been formulated or studied in detail. Here, we remedy that situation, by presenting a general for
Externí odkaz:
http://arxiv.org/abs/2205.07472
Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has been shown that this control can be achieved with periodically nanostructured two-dimensional phononic crystals, for the case of suspended devices. Here
Externí odkaz:
http://arxiv.org/abs/2104.13779
Superconducting tunnel junction fabrication on three-dimensional topography via direct laser writing
Autor:
Heiskanen, Samuli, Maasilta, Ilari J.
Superconducting junctions are widely used in multitude of applications ranging from quantum information science and sensing to solid-state cooling. Traditionally, such devices must be fabricated on flat substrates using standard lithographic techniqu
Externí odkaz:
http://arxiv.org/abs/2009.09749
A nanoscale phononic crystal filter (reflector) is designed for a kinetic inductance detector where the reflection band is matched to the quasiparticle recombination phonons with the aim to increase quasiparticle lifetime in the superconducting reson
Externí odkaz:
http://arxiv.org/abs/1909.10316