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41 papers
Observation of Kondo condensation in a degenerately doped silicon metal
H. Im, D. U. Lee, Y. Jo +10
When a magnetic moment is embedded in a metal, it captures itinerant electrons to form the Kondo cloud1,2, which can spread out over a few micrometres3,4. For a metal with dense ma…
Zero-average bias bidirectional single-electron current generation in a hybrid turnstile
Marco Marín-Suárez, Yuri A. Pashkin, Joonas T. Peltonen +1
Hybrid turnstiles have proven to generate accurate single-electron currents. The usual operation consists of applying a periodic modulation to a capacitively coupled gate electrode…
Suppression of back-tunnelling events in hybrid single-electron turnstiles by source-drain bias modulation
Marco Marín-Suárez, Yuri A. Pashkin, Joonas T. Peltonen +1
Accuracy of single-electron currents produced in hybrid turnstiles at high operation frequencies is, among other errors, limited by electrons tunnelling in the wrong direction. Inc…
Photothermal responsivity of van der Waals material-based nanomechanical resonators
Myrron Albert C. Aguila, Joshoua C. Esmenda, Jyh-Yang Wang +8
Nanomechanical resonators made from van der Waals materials (vdW NMRs) provide a new tool for sensing absorbed laser power. The photothermal response of vdW NMRs, quantified from t…
The Effect of Parameter Variations on the Performance of the Josephson Travelling Wave Parametric Amplifiers
Searbhán Ó Peatáin, Tom Dixon, Phil J. Meeson +3
We have simulated the performance of the Josephson Travelling Wave Parametric Amplifier (JTWPA) based on the one-dimensional array of RF SQUIDs. Unlike the ideal model in which all…
Visualization of Oscillatory Electron Dynamics on the Surface of Liquid Helium
Hala Siddiq, Kostyantyn Nasyedkin, Kimitoshi Kono +4
We have measured signals induced in 5 Corbino electrodes by spontaneous oscillations of 2D surface electrons on liquid helium at 0.3\,K, with a perpendicular magnetic field a…