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We present a new technique for cooling arbitrary charged particles in a Penning trap by utilizing self-cooled electrons stored in a separate, macroscopically distant Penning trap as the cooling medium. The electrons decay predominantly to…

Atomic Physics · Physics 2026-02-16 Jost Herkenhoff , Jonathan Notter , Klaus Blaum

The authors use two insulator layers in thermotunnel refrigerator to modify the shape of the tunneling barrier so that electrons with high kinetic energy pass it with increased probability. Theoretical analysis show that the overall…

Mesoscale and Nanoscale Physics · Physics 2008-07-17 Avto Tavkhelidze , Vasiko Svanidze , Leri Tsakadze

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 the mastering of heat transfer channels down to the…

We demonstrate highly transparent silicon-vanadium and silicon-aluminum tunnel junctions with relatively low sub-gap leakage current and discuss how a trade-off typically encountered between transparency and leakage affects their…

Superconductivity · Physics 2021-08-06 A. Kemppinen , A. Ronzani , E. Mykkänen , J. Hätinen , J. S. Lehtinen , M. Prunnila

Thermoelectric materials convert heat into electricity through thermally driven charge transport in solids, or vice versa for cooling. To be competitive with conventional energy-generation technologies, a thermoelectric material must…

An unconventional method of continuous solid-state cryogenic cooling utilizing the electron subband degeneracy of semiconductor heterostructures is proposed in this Letter. An electrostatic heat pump is modeled, which employs subband…

Mesoscale and Nanoscale Physics · Physics 2023-02-07 Chulin Wang , Thomas Douglas , Matthew A Grayson

We report temporal measurements of the electronic temperature and the electron-phonon thermal relaxation rate in a micron-scale metal island, with a heat capacity of order 1 fJ/K . We employed a superconductor-insulator-normal metal tunnel…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 D. R. Schmidt , C. S. Yung , A. N. Cleland

A superconductor-normal metal-superconductor mesoscopic Josephson junction has been realized in which the critical current is tuned through normal current injection using a symmetric electron cooler directly connected to the weak link. Both…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. M. Savin , J. P. Pekola , J. T. Flyktman , A. Anthore , F. Giazotto

We demonstrate an optical waveguide device, capable of supporting the high, in-vacuum, optical power necessary for trapping a single atom or a cold atom ensemble with evanescent fields. Our photonic integrated platforms, with suspended…

We study theoretically a process of cooling electrons using a superconducting tunnel junction with a $\pi$ phase difference and a usual insulator or a ferroelectric in-between, and an array of such junctions with ferroelectric layers…

Mesoscale and Nanoscale Physics · Physics 2026-03-11 Linus Aliani , Viktoriia Kornich

Phonons, the quanta of lattice vibrations, are primary heat carriers for semiconductors and dielectrics. The demand of effective phonon manipulation urgently emerges, because the thermal management is crucial for the ongoing development of…

Engineering of cooling mechanisms is a bottleneck in nanoelectronics. Whereas thermal exchanges in diffusive graphene are mostly driven by defect assisted acoustic phonon scattering, the case of high-mobility graphene on hexagonal Boron…

Mesoscale and Nanoscale Physics · Physics 2018-04-26 W. Yang , S. Berthou , X. Lu , Q. Wilmart , A. Denis , M. Rosticher , T. Taniguchi , K. Watanabe , G. Feve , J. M. Berroir , G. Zhang , C. Voisin , E. Baudin , B. Plaçais

Superconducting electronics have emerged as a promising platform for advanced information processing, offering unique opportunities for on chip computation and signal manipulation at cryogenic temperatures. These devices hold particular…

Heat management and refrigeration are key concepts for nanoscale devices operating at cryogenic temperatures. The design of an on-chip mesoscopic refrigerator that works thanks to the input heat is presented, thus realizing a solid state…

Mesoscale and Nanoscale Physics · Physics 2018-12-18 Giampiero Marchegiani , Pauli Virtanen , Francesco Giazotto

3D integrated circuit (3D-IC) technology gained acceptance due to the ability to achieve extremely high level of integration, where hundreds of ICs are stacked vertically. Such level of integration can result in local power dissipation of…

Applied Physics · Physics 2019-11-04 Chandrasekhar Mandalapu , Ibrahim M Abdel-Motaleb , Sangki Hong , Robert Patti

A three terminal nanoscale refrigeration concept based on a vibron-coupled quantum dot hybrid system coupled to two electronic reservoirs and a phonon bath is proposed and analyzed in detail. While investigating the non-trivial role of…

Mesoscale and Nanoscale Physics · Physics 2021-02-03 Swarnadip Mukherjee , Bitan De , Bhaskaran Muralidharan

SiC is a robust semiconductor material considered ideal for high-power application due to its material stability and large bulk thermal conductivity defined by the very fast phonons. In this paper, however, we show that both…

Materials Science · Physics 2007-05-23 Eleni Ziambaras , Per Hyldgaard

High-efficient heat dissipation plays critical role for high-power-density electronics. Experimental synthesis of ultrahigh thermal conductivity boron arsenide (BAs, 1300 W m-1K-1) cooling substrates into the wide-bandgap semiconductor of…

Materials Science · Physics 2024-01-25 Jing Wu , E Zhou , An Huang , Hongbin Zhang , Ming Hu , Guangzhao Qin

The two-dimensional atomically thin insulator hexagonal boron nitride (h-BN) constitutes a new paradigm in tunnel based devices. A large band gap along with its atomically flat nature without dangling bonds or interface trap states makes it…

Mesoscale and Nanoscale Physics · Physics 2014-11-14 André Dankert , M. Venkata Kamalakar , Abdul Wajid , R. S. Patel , Saroj P. Dash

We demonstrate experimentally that a hybrid single-electron transistor with superconducting leads and a normal-metal island can be refrigerated by an alternating voltage applied to the gate electrode. The simultaneous measurement of the dc…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 S. Kafanov , A. Kemppinen , Yu. A. Pashkin , M. Meschke , J. S. Tsai , J. P. Pekola