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Energy storage and release in dielectric materials can be described on the basis of the charge trapping mechanism. Most phenomenological aspects have been recently rationalized in terms of the space charge model~\cite{blaise,blaise1}.…

mtrl-th · Physics 2008-02-03 C. Rambaut , K. H. Oh , H. Jaffrezic , J. Kohanoff , S. Fayeulle

We investigate an electron in the plane interacting with the magnetic field due to an electric current forming a localized rotationally symmetric vortex. We show that independently of the vortex profile an electron with spin antiparallel to…

Condensed Matter · Physics 2007-05-23 F. Bentosela , P. Exner , V. A. Zagrebnov

In recent years, resistive RAM often referred to as memristor is actively pursued as a replacement for nonvolatile-flash memory due to its superior characteristics such as high density, scalability, low power operation, high endurance, and…

Mesoscale and Nanoscale Physics · Physics 2022-11-17 Foroozan S. Koushan , Nobuhiko P. Kobayashi

Electrically charged particles, such as the electron, are ubiquitous. By contrast, no elementary particles with a net magnetic charge have ever been observed, despite intensive and prolonged searches. We pursue an alternative strategy,…

Strongly Correlated Electrons · Physics 2011-11-08 Claudio Castelnovo , Roderich Moessner , Shivaji L. Sondhi

In the one-dimensional world of a flux line beyond Bce, paired evanescent low momentum 0-Landau electron states condense into magnetized bosons of vanishing momentum. I use the results of Rojas et al. within a Coulomb potential and show…

General Physics · Physics 2008-01-21 C. P. Kouropoulos

Ultracold atoms at temperatures close to the recoil limit have been achieved by extending Doppler cooling to forbidden transitions. A cloud of ^40Ca atoms has been cooled and trapped to a temperature as low as 6 \mu K by operating a…

Atomic Physics · Physics 2015-11-30 T. Binnewies , G. Wilpers , U. Sterr , F. Riehle , J. Helmcke , T. E. Mehlstäubler , E. M. Rasel , W. Ertmer

Transporting charged particles between different traps has become an important feature in high-precision spectroscopy experiments of different types. In many experiments in atomic and molecular physics, the optical probing of the ions is…

Atomic Physics · Physics 2015-05-19 M. R. Kamsap , C. Champenois , J. Pedregosa-Gutierrez , M. Houssin , M. Knoop

In Fermilab's electron cooler, a 0.1A, 4.3MeV DC electron beam propagates through the 20 m cooling section, which is immersed in a weak longitudinal magnetic field. A proper adjustment of 200 dipole coils, installed in the cooling section…

Accelerator Physics · Physics 2012-08-17 Andrei Khilkevich , Lionel R. Prost , Alexander V. Shemyakin

Transverse instabilities of the antiproton beam have been observed in the Recycler ring soon after its commissioning. After installation of transverse dampers, the threshold for the instability limit increased significantly but the…

Accelerator Physics · Physics 2012-01-20 L. R. Prost , A. Burov , A. Shemyakin , C. M. Bhat , J. Crisp , N. Eddy

We investigated the electrical properties of a unipolar organic device with traps that were intentionally inserted into a particular position in the device. Depending on their inserted position, the traps significantly alter the charge…

Applied Physics · Physics 2023-05-02 Donghyun Ko , Gyuhyeon Lee , Kyu-Myung Lee , Yongsup Park , Jaesang Lee

We describe a new electron cooler being developed for 2.5 MeV protons at the Integrable Optics Test Accelerator (IOTA), which is a highly re-configurable storage ring at Fermilab. This system would enable the study of magnetized electron…

Accelerator Physics · Physics 2022-01-26 N. Banerjee , M. K. Bossard , J. Brandt , Y-K. Kim , B. Cathey , S. Nagaitsev , G. Stancari

Coupled electron-hole states are realized in a system consisting of a combination of an electrostatic potential barrier and ring-shaped potential well, which resembles a circular dipole. A perpendicular magnetic field induces confined…

Mesoscale and Nanoscale Physics · Physics 2019-04-05 R. Van Pottelberge , F. M. Peeters

It has been shown that the presence of a metal plate near a double quantum well with spatially separated electron and hole layers may lead to a drastic reconstruction of the system state with the formation of stable charged complexes of…

Condensed Matter · Physics 2009-10-28 V. I. Yudson

We studied theoretically the behavior of an injected electron-hole pair in crystalline polyethylene. Time-dependent adiabatic evolution by ab-initio molecular dynamics simulations show that the pair will become self-trapped in the perfect…

Materials Science · Physics 2015-06-25 D. Ceresoli , M. C. Righi , E. Tosatti , S. Scandolo , G. Santoro , S. Serra

At low densities, electrons confined to two dimensions in a delta-doped heterostructure can arrange themselves into self-consistent droplets due to disorder and screening effects. We use this observation to show that at low temperatures,…

Strongly Correlated Electrons · Physics 2007-10-10 V. Tripathi , M. P. Kennett

Three-dimensional (3D) micro-electromagnets were developed to control particle motion in magnetic field landscapes in vacuum near a chip. Multiple layers of micron-scale conductors separated by transparent insulators create particle…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 M. Drndic , C. S. Lee , R. M. Westervelt

Motivated by the recent realization of space-borne Bose-Einstein Condensates (BECs) under micro-gravity conditions, we extend the understanding of ultracold dipolar bosonic gases by exploring their behavior in a novel trapping configuration…

Quantum Gases · Physics 2024-09-30 Hari Sadhan Ghosh , Soumyadeep Halder , Subrata Das , Sonjoy Majumder

Instability of electron-positron vacuum in strong electric fields is studied. First, falling to the Coulomb center is discussed at $Z>137/2$ for a spinless boson and at $Z>137$ for electron. Then, focus is concentrated on description of…

Nuclear Theory · Physics 2021-06-04 D. N. Voskresensky

In many composites the electrical transport takes place only by tunneling between isolated particles. For a long time it was quite a puzzle how, in spite of the incompatibility of tunneling and percolation networks, these composites conform…

Disordered Systems and Neural Networks · Physics 2009-11-10 D. Toker , D. Azulay , N. Shimoni , I. Balberg , O. Millo

We study theoretically a scheme in which particles from an incident beam are trapped in a potential well when colliding with particles already present in the well. The balance between the arrival of new particles and the evaporation of…

Statistical Mechanics · Physics 2009-11-07 C. F. Roos , P. Cren , D. Guéry-Odelin , J. Dalibard