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We study the effect of a single bistable scatterer on conductance of mesoscopic conductors in the crossover regime from open to closed systems. After the resistance of the contact between the metallic grain and bulk electrode exceeds the…

凝聚态物理 · 物理学 2016-08-31 Vladimir I. Fal'ko

We study electron and spin transport in interacting quantum wires contacted by noninteracting leads. We theoretically model the wire and junctions as an inhomogeneous chain where the parameters at the junction change on the scale of the…

介观与纳米尺度物理 · 物理学 2016-10-05 Denis Morath , Nicholas Sedlmayr , Jesko Sirker , Sebastian Eggert

We theoretically investigate intermodulation distortion in high-Tc superconductors. We study the effect of nonmagnetic impurities on the real and imaginary parts of nonlinear conductivity. The nonlinear conductivity is proportional to the…

超导电性 · 物理学 2009-11-13 Takanobu Jujo

Nonlinear interactions in focusing media between traveling solitons and the dispersive shocks produced by an initial discontinuity are studied using the one-dimensional nonlinear Schrodinger equation. It is shown that, when solitons travel…

混沌动力学 · 物理学 2019-03-27 Gino Biondini , Jonathan Lottes

Nonlocal entanglement is crucial for quantum information processes. While nonlocal entanglement has been realized for photons, it is much more difficult to demonstrate for electrons. One approach that has been proposed is to use hybrid…

介观与纳米尺度物理 · 物理学 2014-10-15 Jian Wei , Venkat Chandrasekhar

We consider the effect of electron scattering on lines emitted as a result of supernova interaction with a circumstellar medium, assuming that the scattering occurs in ionized gas in the preshock circumstellar medium. The single scattering…

高能天体物理现象 · 物理学 2018-02-07 Chenliang Huang , Roger Chevalier

Boulat, Saleur and Schmitteckert (BSS) reported results on the full $I-V$ characteristics of the interacting resonant level model (IRLM) exhibiting region with unexpected negative differential conductance (NDC). Using time-dependent density…

强关联电子 · 物理学 2008-12-02 L. Borda , A. Zawadowski

We obtain explicit expressions for the correlation functions of transmission and reflection coefficients of coherent electronic waves propagating through a disordered quasi-one-dimensional medium with purely elastic diffusive scattering in…

凝聚态物理 · 物理学 2009-10-22 A. M. S. Macedo

We study linear electron transport through a molecular wire sandwiched between nanotube leads. We show that the presence of such electrodes strongly influences the calculated conductance. We find that depending on the quality and geometry…

介观与纳米尺度物理 · 物理学 2007-05-23 G. Cuniberti , G. Fagas , K. Richter

Although the two-dimensional model of random networks of metallic nanowires or carbon nanotubes is widely used, it significantly overestimates the number of contacts between elements compared to quasi-three-dimensional models. This, within…

无序系统与神经网络 · 物理学 2026-04-01 Yuri Yu. Tarasevich , Andrei V. Eserkepov

The transport properties of interacting electrons for which the spin degree of freedom is taken into account are numerically studied for small two dimensional diffusive clusters. On-site electron-electron interactions tend to delocalize the…

介观与纳米尺度物理 · 物理学 2009-11-07 Richard Berkovits , Jan W. Kantelhardt

Low energy interactions between particles are often characterised by elastic scattering. Just as electrons undergo Thomson scattering with photons, dark matter particles may experience an analogous form of momentum exchange with dark…

宇宙学与河外天体物理 · 物理学 2015-06-23 Marco Baldi , Fergus Simpson

We study the transport properties of a twisted bilayer graphene flake contacted by two monolayer nanoribbons which act as leads. We analyze the conductance in terms of the spectra of the bilayer nanoribbon and the monolayer contacts. The…

介观与纳米尺度物理 · 物理学 2015-06-15 M. Pelc , E. Suárez Morell , L. Brey , L. Chico

The Kondo effect and superconductivity are both prime examples of many-body phenomena. Here we report transport measurements on a carbon nanotube quantum dot coupled to superconducting leads that show a delicate interplay between both…

介观与纳米尺度物理 · 物理学 2009-11-07 M. R. Buitelaar , T. Nussbaumer , C. Schoenenberger

We present a theory of non-equilibrium superconducting proximity effect in an interacting quantum dot induced by a time-dependent tunnel coupling between dot and a superconducting lead. The proximity effect, that is established when the…

介观与纳米尺度物理 · 物理学 2012-03-30 Ali G. Moghaddam , Michele Governale , Jürgen König

The scattering of electrons on impurities with internal degrees of freedom is bound to produce the signatures of the scatterer's own dynamics and results in nontrivial electronic transport properties. Previous studies of polaronic…

强关联电子 · 物理学 2021-01-18 J. Krsnik , I. Batistić , A. Marunović , E. Tutiš , O. S. Barišić

We investigate the proximity effect in junctions between $N=3$ superconductors under commensurate voltage bias. The bias is chosen to highlight the role of transport processes that exchange multiple Cooper pairs coherently between more than…

介观与纳米尺度物理 · 物理学 2017-06-01 Ciprian Padurariu , Thibaut Jonckheere , Jérôme Rech , Thierry Martin , Denis Feinberg

We show that controlled interference of a particle's wavefunction can be used to perform a quantum mechanical measurement in an incomplete basis. This happens because the measurement projects the particle into a lower dimensional subspace…

量子物理 · 物理学 2007-05-23 R. Srikanth

Transport through a superconductor-Luttinger liquid junction is considered. When the interaction in the Luttinger liquid is repulsive, the resistance of the junction with a sufficiently clean interface shows nonmonotonic temperature- or…

介观与纳米尺度物理 · 物理学 2007-05-23 H. -W. Lee , Hyun C. Lee , Hangmo Yi , Han-Yong Choi

We study contact effects on electron transport across a molecular wire sandwiched between two semi-infinite (carbon) nanotube leads as a model for nanoelectrodes. Employing the Landauer scattering matrix approach we find that the…

介观与纳米尺度物理 · 物理学 2009-10-31 G. Fagas , G. Cuniberti , K. Richter