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We study the quasi-stationary evolution of systems where an energetic confinement is unable to completely retain their constituents. It is performed an extensive numerical study of a gas whose dynamics is driven by binary encounters and its…

Statistical Mechanics · Physics 2007-05-23 L. Velazquez , H. Mosquera Cuesta , F. Guzman

Understanding carrier trapping in solids has proven key to semiconductor technologies but observations thus far have relied on ensembles of point defects, where the impact of neighboring traps or carrier screening is often important. Here,…

Mesoscale and Nanoscale Physics · Physics 2023-06-05 Artur Lozovoi , YunHeng Chen , Gyorgy Vizkelethy , Edward Bielejec , Johannes Flick , Marcus W. Doherty , Carlos A. Meriles

We propose an edge averaged finite element(EAFE) discretization to solve the Heat-PNP (Poisson-Nernst-Planck) equations approximately. Our method enforces positivity of the computed charged density functions and temperature function. Also…

Numerical Analysis · Mathematics 2019-11-20 Simo Wu , Chun Liu , Ludmil Zitakanov

A major challenge in the molecular simulation of electric double layer capacitors (EDLCs) is the choice of an appropriate model for the electrode. Typically, in such simulations the electrode surface is modeled using a uniform fixed charge…

Computational Physics · Physics 2015-06-22 Zhenxing Wang , Yang Yang , David L. Olmsted , Mark Asta , Brian B. Laird

This paper proposes a new equivalent circuit model for rechargeable batteries by modifying a double-capacitor model proposed in [1]. It is known that the original model can address the rate capacity effect and energy recovery effect…

Systems and Control · Electrical Eng. & Systems 2024-09-23 Ning Tian , Huazhen Fang , Jian Chen , Yebin Wang

Understanding charge storage in low-dimensional electrodes is crucial for developing novel ecologically friendly devices for capacitive energy storage and conversion, water desalination, etc. Exactly-solvable models allow in-depth analyses…

Soft Condensed Matter · Physics 2021-12-23 Taras Verkholyak , Andrij Kuzmak , Svyatoslav Kondrat

Recent experiments in Pr(Nd)$_{0.5}$Ca$_{0.5}$MnO$_3$ thin films exhibited (multiple) reentrant charge ordering (CO) transitions with change of {\it temperature} T under fixed magnetic field H, which are in contrast to the results for the…

Strongly Correlated Electrons · Physics 2010-05-24 Qingshan Yuan , Thilo Kopp

We develop a flexible quasiparticle theory of transport coefficients of hot hadronic matter at finite baryon density. We begin with a hadronic quasiparticle model which includes a scalar and a vector mean field. Quasiparticle energies and…

Nuclear Theory · Physics 2016-01-20 M. Albright , J. I. Kapusta

Many superconducting devices rely on the finite gap in the excitation spectrum of a superconductor: thanks to this gap, at temperatures much smaller than the critical one the number of excitations (quasiparticles) that can impact the…

Superconductivity · Physics 2024-09-05 P. B. Fischer , G. Catelani

We study arrays of parallel doped semiconductor nanowires in a temperature range where the electrons propagate through the nanowires by phonon assisted hops between localized states. By solving the Random Resistor Network problem, we…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Riccardo Bosisio , Cosimo Gorini , Geneviève Fleury , Jean-Louis Pichard

Dust particulates immersed in a quasineutral plasma can emit electrons in several important applications. Once electron emission becomes strong enough, the dust enters the positively charged regime where the conventional…

Plasma Physics · Physics 2014-08-19 Gian Luca Delzanno , Xian-Zhu Tang

The split-charge equilibration method is extended to describe dissipative charge transfer similarly as the Drude model, whereby the generic frequency-dependent dielectric permitivitties or conductivities of dielectrics and metals can be…

Materials Science · Physics 2024-10-02 Martin H. Müser

The thermalization of non-equilibrium charge carriers is at the heart of thermoelectric energy conversion. In nanoscale systems, the equilibration length can be on the order of the system size, leading to a situation where thermoelectric…

Mesoscale and Nanoscale Physics · Physics 2020-05-20 Fabian Könemann , I-Ju Chen , Sebastian Lehmann , Claes Thelander , Bernd Gotsmann

Fluid dynamics accompanies with the entropy production thus increases the local temperature, which plays an important role in charged systems such as the ion channel in biological environment and electrodiffusion in capacitors/batteries. In…

Fluid Dynamics · Physics 2017-11-09 Pei Liu , Simo Wu , Chun Liu

Passive filters allowing the exchange of particles in a narrow band of energy are currently used in micro-refrigerators and energy transducers. In this letter, we analyze their thermal properties using linear irreversible thermodynamics and…

Statistical Mechanics · Physics 2017-10-04 Ramón Muñoz-Tapia , Ricardo Brito , Juan M. R. Parrondo

We present a unified description of heat flow in two-terminal hybrid quantum systems. Using simple models, we analytically study nonlinear aspects of heat transfer between various reservoirs: metals, solids, and spin baths, mediated by the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Lian-Ao Wu , Claire X. Yu , Dvira Segal

Harnessing the wave-nature of charge carriers in solid state devices, electron optics investigates and exploits coherent phenomena, in analogy with optics and photonics. Typically, this requires complex electronic devices leveraging…

While insensitive to weak non magnetic disorder, an s-wave superconductor can be driven insulating by strong disorder. Using a scheme that captures the correct ground state, and fully retains thermal amplitude and phase fluctuations, we…

Superconductivity · Physics 2015-06-18 Sabyasachi Tarat , Pinaki Majumdar

Finite-temperature charge-ordering phase transition in quasi one-dimensional (1D) molecular conductors is investigated theoretically, based on a quasi 1D extended Hubbard model at quarter filling with interchain Coulomb repulsion $V_\perp$.…

Strongly Correlated Electrons · Physics 2016-08-31 Hideo Yoshioka , Masahisa Tsuchiizu , Hitoshi Seo

A theoretical study of the thermoelectric current and energy harvesting in an interacting double quantum dot system, connected to reservoirs held at different chemical potentials and temperatures is presented. Using a rate-equation…

Mesoscale and Nanoscale Physics · Physics 2019-02-27 Yair Mazal , Yigal Meir , Yonatan Dubi