24 citations · 59 across the 7 of their papers we have counts for
7 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…
Heat transfer across a vacuum gap induced by piezoelectrically mediated acoustic phonon tunneling
Zhuoran Geng, Ilari J. Maasilta
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 piezoelectricit…
Superconductor-ferromagnet hybrids for non-reciprocal electronics and detectors
Zhuoran Geng, Alberto Hijano, Stefan Ilic +16
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 r…
Complete tunneling of acoustic waves between closely spaced piezoelectric crystals
Zhuoran Geng, Ilari J. Maasilta
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 demonstr…
Analytical models for the pulse shape of a superconductor-ferromagnet tunnel junction thermoelectric microcalorimeter
Zhuoran Geng, Ilari J. Maasilta
The superconductor-ferromagnet thermoelectric detector (SFTED) is a novel ultrasensitive radiation detector based on the giant thermoelectric effect in superconductorferromagnet tu…
Acoustic wave tunneling across a vacuum gap between two piezoelectric crystals with arbitrary symmetry and orientation
Zhuoran Geng, Ilari J. Maasilta
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…
Minimizing coherent thermal conductance by controlling the periodicity of two-dimensional phononic crystals
Yaolan Tian, Tuomas A. Puurtinen, Zhuoran Geng +1
Periodic hole array phononic crystals (PnC) can strongly modify the phonon dispersion relations, and have been shown to influence thermal conductance coherently, especially at low…