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Taking into account an inner structure of the arms of the Aharonov-Bohm ring (AB ring) we have analyzed the transport features related to the topological phase transition which is induced in a superconducting wire (SC wire) with strong…

Mesoscale and Nanoscale Physics · Physics 2019-05-01 V. V. Valkov , M. Yu. Kagan , S. V. Aksenov

The linear transport properties of a model molecular transistor with electron-electron and electron-phonon interactions were investigated analytically and numerically. The model takes into account phonon modulation of the electronic energy…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 P. S. Cornaglia , D. R. Grempel , H. Ness

We study spin effects in the magneto-conductance of ballistic mesoscopic systems subject to inhomogeneous magnetic fields. We present a numerical approach to the spin-dependent Landauer conductance which generalizes recursive Green function…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Diego Frustaglia , Martina Hentschel , Klaus Richter

We investigate quantum spin transport in a structure of conducting ring, embedded in textured electric field, with two leads, and obtain an exact solution for the problem. The spin precession induced by the Aharonov-Casher phase is studied.…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Shun-Qing Shen , Zhi-Jian Li , Zhongshui Ma

We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through one-dimensional and two-dimensional…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Dario Bercioux , Michele Governale , Vittorio Cataudella , Vincenzo Marigliano Ramaglia

We theoretically study the single electron transfer through two-terminal quantum ring capacitively coupled to charged dot placed in its center. For this purpose we solve time-dependent Schrodinger equation for fully correlated two-particle…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 T. Chwiej , K. Kutorasinski

The electronic self-energy is studied for a two dimensional electron gas coupled to a spin-orbit Rashba field and interacting with dispersionless phonons. For the case of a momentum independent electron-phonon coupling (Holstein model) we…

Strongly Correlated Electrons · Physics 2009-11-13 E. Cappelluti , C. Grimaldi , F. Marsiglio

There has been considerable debate on the onset of exotic spin phenomena in quantum wires due to enhanced many-body effects caused by the one-dimensional (1D) alignment of charge carriers. We explain various observed spin effects, such as a…

Mesoscale and Nanoscale Physics · Physics 2015-02-17 Alfredo X. Sánchez , Jean-Pierre Leburton

We generalize the scattering theory of quantum shot noise to include the full spin-density matrix of electrons injected from a spin-filtering or ferromagnetic electrode into a quantum-coherent nanostructure governed by various…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Ralitsa L. Dragomirova , Branislav K. Nikolic

Quantum coherence is of crucial importance for the applicability of donor based quantum computing. In this Letter we describe the observation of the interference of conduction paths induced by two donors in a nano-MOSFET resulting in a Fano…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 J. Verduijn , G. C. Tettamanzi , G. P. Lansbergen , N. Collaert , S. Biesemans , S. Rogge

We investigate a non-Hermitian Aharonov-Bohm (AB) ring system with a quantum dot (QD) embedded in each of its two arms. The energy levels of the QDs are complex in order to take into account the physical gain or loss of the ring system…

Quantum Physics · Physics 2017-02-14 Qi-Bo Zeng , Shu Chen , Rong Lü

Motivated by recent experiments, in which the Kondo effect has been observed for the first time in a double quantum-dot structure, we study electron transport through a system consisting of two ultrasmall, capacitively-coupled dots with…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Teemu Pohjola , Herbert Schoeller , Gerd Schön

Antiferromagnetism couples electron spin to its orbital motion, thus allowing excitation of electron-spin transitions by an ac electric rather than magnetic field - with absorption, exceeding that of common electron spin resonance at least…

Strongly Correlated Electrons · Physics 2009-08-08 Revaz Ramazashvili

We investigate a possibility of pair electron-electron e-e collisions in a ballistic wire with spin-orbit coupling and only one populated mode. Unlike in a spin-degenerate system, a combination of spin-splitting in momentum space with a…

Mesoscale and Nanoscale Physics · Physics 2018-09-12 V. S. Khrapai , K. E. Nagaev

We study the influence of spin waves on transport through a single-level quantum dot weakly coupled to ferromagnetic electrodes with noncollinear magnetizations. Side peaks appear in the differential conductance due to emission and…

Mesoscale and Nanoscale Physics · Physics 2010-11-15 Björn Sothmann , Jürgen König , Anatoli Kadigrobov

In the present review we make a comprehensive analysis of our understanding on electron transport in mesoscopic single-channel rings and multi-channel cylinders within a tight-binding framework. A spectacular mesoscopic phenomenon where a…

Mesoscale and Nanoscale Physics · Physics 2013-05-22 Santanu K. Maiti

We develop an electron transport theory for the hybrid system of a semiconducting carbon nanotube that encapsulates a one-atom-thick metallic wire. The theory predicts Fano resonances in electron transport through the system, whereby the…

Mesoscale and Nanoscale Physics · Physics 2016-05-10 M. F. Gelin , I. V. Bondarev

Electron spin resonance (ESR) is usually interpreted as a single-particle phenomenon protected from the effect of many-body correlations. We show that this is not the case in a two-dimensional Fermi liquid (FL) with spin-orbit coupling…

Mesoscale and Nanoscale Physics · Physics 2016-02-17 Saurabh Maiti , Muhammad Imran , Dmitrii L. Maslov

We theoretically study electronic transport through a region with inhomogeneous Rashba spin-orbit (RSO) coupling placed between two normal regions in a monolayer graphene. The inhomogeneous RSO region is characterized by linearly varying…

Mesoscale and Nanoscale Physics · Physics 2016-01-21 Leila Razzaghi , Mir Vahid Hosseini

We study the influence of spin polarization on the degree of coherence of electron transport through interacting quantum dots. To this end, we identify transport regimes in which the degree of coherence can be related to the visibility of…

Mesoscale and Nanoscale Physics · Physics 2010-11-04 Bastian Hiltscher , Michele Governale , Jürgen König
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