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This is a popular review of some recent investigations of the Kondo effect in a variety of mesoscopic systems. After a brief introduction, experiments are described where a scanning tunneling microscope measures the surroundings of a…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Leo Kouwenhoven , Leonid Glazman

Investigation of electrical conduction in polysilicon nanowires (polySiNW) with nanograins (5 to 20nm), based on Monte Carlo (MC) simulations and electrical measurements from 4K to 300K are presented. Some irregular Coulomb Oscillations…

Materials Science · Physics 2007-08-15 S. Ecoffey , S. Mahapatra , V. Pott , D. Bouvet , G. Reimbold , A. -M. Ionescu

Using Monte Carlo simulations, we investigate the electrical conductivity of networks of hard rods as a function of the volume fraction for two tunneling conductance models. For a simple, orientationally independent tunneling model, we…

Soft Condensed Matter · Physics 2018-12-26 Arshia Atashpendar , Sarthak Arora , Alexander D. Rahm , Tanja Schilling

We investigate the spatially and temporally resolved electron kinetics in a homogeneous electric field in argon gas, in the vicinity of an emitting boundary. This (transient) region, where the electron swarm exhibits non-equilibrium…

Plasma Physics · Physics 2020-01-08 Z. Donko , P. Hartmann , I. Korolov , V. Jeges , D. Bosnjakovic , S. Dujko

Using Corbino samples we have observed oscillatory conductance in a high-mobility two-dimensional electron system subjected to crossed microwave and magnetic fields. On the strongest of the oscillation minima the conductance is found to be…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 C. L. Yang , M. A. Zudov , T. A. Knuuttila , R. R. Du , L. N. Pfeiffer , K. W. West

We propose a new method of direct detection of spin accumulation, which overcomes problems of previous measurement schemes. A spin dependent current in a single-electron transistor with ferromagnetic electrodes leads to spin accumulation on…

Mesoscale and Nanoscale Physics · Physics 2016-08-16 Jan Martinek , Józef Barnas , Sadamichi Maekawa , Herbert Schoeller , Gerd Schön

Based on a Monte Carlo method, we investigate the influence of transport conditions on the electron spin relaxation in GaAs. The decay of initial electron spin polarization is calculated as a function of distance under the presence of…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 E. A. Barry , A. A. Kiselev , K. W. Kim

Spin-based logic devices could operate at very high speed with very low energy consumption and hold significant promise for quantum information processing and metrology. Here, an in-house developed, experimentally verified, ensemble…

Computational Physics · Physics 2018-01-03 B. Thorpe , K. Kalna , F. C. Langbein , S Schirmer

A test of Geant4 simulation of electron backscattering recently published in this journal prompted further investigation into the causes of the observed behaviour. An interplay between features of geometry and physics algorithms implemented…

We study the in-plane transport of spin-polarized electrons in III-V semiconductor quantum wells. The spin dynamics is controlled by the spin-orbit interaction, which arises via the Dresselhaus (bulk asymmetry) and Rashba (well asymmetry)…

Mesoscale and Nanoscale Physics · Physics 2010-10-12 Semion Saikin , Min Shen , Ming-C. Cheng , Vladimir Privman

Electric current-induced magnetoresistance oscillations recently discovered in two-dimensional electron systems are analyzed using a microscopic scheme for nonlinear magnetotransport direct controlled by the current. The magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2007-09-18 X. L. Lei

We show that nonequilibrium spin fluctuations significantly influence the electronic transport in a single-electron transistor, when the spin relaxation on the island is slow compared to other relaxation processes, and when size effects…

Mesoscale and Nanoscale Physics · Physics 2016-08-16 Jan Martinek , Józef Barnas , Gerd Schön , Saburo Takahashi , Sadamichi Maekawa

We study the effects of spin accumulation (inside reservoirs) on electronic transport with tunneling and reflections at the gates of a quantum dot. Within the stub model, the calculation focus on the current-current correlation function for…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 J. G. G. S. Ramos , A. L. R. Barbosa , D. Bazeia , M. S. Hussein

We report on extensive measurements at the Cornell Electron-positron Storage Ring of electron-cloud-induced betatron tune shifts for trains of positron bunches at 2.1 and 5.3 GeV with bunch populations ranging between 0.64x10^10 and…

Accelerator Physics · Physics 2019-08-06 Stephen Poprocki , Sean Buechele , James Crittenden , Keefer Rowan , David Rubin , John San Soucie

We theoretically study electronic transport through a layer of quantum dots connecting two metallic leads. By the inclusion of an inductor in series with the junction, we show that steady electronic transport in such a system may be…

Mesoscale and Nanoscale Physics · Physics 2015-03-14 Danko Radic , Anatoly M. Kadigrobov , Leonid Y. Gorelik , Robert I. Shekhter , Mats Jonson

We calculate the average number of electrons on a metallic single-electron-box as a function of the gate voltage for arbitrary values of the tunneling conductance. In the vicinity of the plateaus the problem is equivalent to calculating the…

Mesoscale and Nanoscale Physics · Physics 2009-10-28 W. Hofstetter , W. Zwerger

We study a scheme for electrical detection, using electron spin resonance, of coherent vibrations in a molecular single electron level trapped near a conduction channel. Both equilibrium spin-currents and non-equilibrium spin- and charge…

Mesoscale and Nanoscale Physics · Physics 2008-09-17 J. Fransson , Jian-Xin Zhu

We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl…

Strongly Correlated Electrons · Physics 2009-11-10 F. Rivadulla , J. -S. Zhou , J. B. Goodenough

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

A model calculation is presented to characterize the anomalous cross-field transport of electrons in a Hall thruster geometry. The anomalous nature of the transport is attributed to the chaotic dynamics of the electrons arising from their…

Plasma Physics · Physics 2020-03-18 D. Mandal , Y. Elskens , N. Lemoine , F. Doveil