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We calculate the non-linear tunneling current through a molecule with two electron-accepting orbitals which interact with an intramolecular vibration. We investigate the interplay between Coulomb blockade and non-equilibrium…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Katja C. Nowack , Maarten R. Wegewijs

Non-equilibrium transport through a quantum dot with one spin-split single-particle level is studied in the cotunneling regime at low temperatures. The Coulomb diamond can be subdivided into parts differing in at least one of two respects:…

Mesoscale and Nanoscale Physics · Physics 2009-12-07 Daniel Becker , Daniela Pfannkuche

Charge is transported through superconducting SSS single-electron transistors at finite bias voltages by a combination of coherent Cooper-pair tunneling and quasiparticle tunneling. At low transport voltages the effect of an ``odd''…

Condensed Matter · Physics 2009-10-28 Jens Siewert , Gerd Schön

We formulate a quantitative theory of non-local electron transport in three-terminal disordered ferromagnet-superconductor-ferromagnet structures. We demonstrate that magnetic effects have different implications: While strong exchange field…

Superconductivity · Physics 2010-07-29 Mikhail S. Kalenkov , Andrei D. Zaikin

We report low-temperature electrical transport studies of molecule-scale silicon nanowires. Individual nanowires exhibit well-defined Coulomb blockade oscillations characteristic of charge addition to a single nanostructure with length…

Materials Science · Physics 2015-06-24 Zhaohui Zhong , Ying Fang , Wei Lu , Charles M. Lieber

We analyze the stationary spin-dependent transport through a single-molecule magnet weakly coupled to external ferromagnetic leads. Using the real-time diagrammatic technique, we calculate the sequential and cotunneling contributions to…

Mesoscale and Nanoscale Physics · Physics 2010-10-29 Maciej Misiorny , Ireneusz Weymann , Jozef Barnas

Within the Coulomb blockade regime, our study delves into the charge, spin, and thermoelectric transport characteristics in a benzene-based molecular nano-junction using the Pauli master equation and linear response theory. The charge- and…

Mesoscale and Nanoscale Physics · Physics 2024-01-17 Parbati Senapati , Prakash Parida

A tunable directional coupler based on Coulomb Blockade effect is presented. Two electron waveguides are coupled by a quantum dot to an injector waveguide. Electron confinement is obtained by surface Schottky gates on single GaAs/AlGaAs…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 P. Pingue , V. Piazza , F. Beltram , I. Farrer , D. A. Ritchie , M. Pepper

Vibronic effects in resonant electron transport through single-molecule junctions are analyzed. The study is based on generic models for molecular junctions, which include electronic states on the molecular bridge that are vibrationally…

Mesoscale and Nanoscale Physics · Physics 2011-03-15 R. Härtle , M. Thoss

We present results of spin-unrestricted first-principles quantum transport for a gated C$_{60}$ molecule weakly contacted to Al electrodes, making emphasis on the role played by the electronic localization and the spin degree of freedom. As…

Materials Science · Physics 2007-05-23 J. J. Palacios

Electrons in closed systems can exhibit Coulomb blockade (CB) oscillations due to charge quantization. Here, we report CB oscillations in aluminum superconducting islands on InAs nanowires in the open regime. The Al island is connected to…

Mesoscale and Nanoscale Physics · Physics 2025-05-14 Huading Song , Zhaoyu Wang , Dong Pan , Jiaye Xu , Yuqing Wang , Zhan Cao , Dong E. Liu , Ke He , Runan Shang , Jianhua Zhao , Hao Zhang

The description of transport phenomena in devices consisting of arrays of tunnel junctions, and the experimental confirmation of these predictions is one of the great successes of mesoscopic physics. The aim of this paper is to give a…

Mesoscale and Nanoscale Physics · Physics 2011-12-16 T. Kuhn , G. S. Paraoanu

We study electron transport in nanostructures patterned in bilayer graphene patches grown epitaxially on SiC as a function of doping, magnetic field, and temperature. Away from charge neutrality transport is only weakly modulated by changes…

We study the influence of Coulomb interaction on the thermoelectric transport coefficients for a metallic single-electron transistor. By performing a perturbation expansion up to second order in the tunnel-barrier conductance, we include…

Mesoscale and Nanoscale Physics · Physics 2008-04-04 Björn Kubala , Jürgen König , J. P. Pekola

A new theoretical method is introduced to study coherent electron transport in an interacting multilevel quantum dot. The method yields the correct behavior both in the limit of weak and strong coupling to the leads, giving a unified…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 A. Levy Yeyati , F. Flores , A. Martin-Rodero

We study transport properties of a single-molecule magnet (SMM) weakly coupled to one nonmagnetic and one ferromagnetic lead. Using the diagrammatic technique in real time, we calculate transport in the sequential and cotunneling regimes…

Mesoscale and Nanoscale Physics · Physics 2010-10-29 Maciej Misiorny , Irenuesz Weymann , Jozef Barnas

The role of spin is investigated in the transport through a quantum dot with two overlapping resonances (one having a width larger than the level separation and the other very narrow, cf. Silvestrov and Imry, Phys. Rev. Lett. {\bf 85}, 2565…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 P. G. Silvestrov , Y. Imry

We discuss electron transport in individual nanometer-scale metallic grains at dilution refrigerator temperatures. In the weak coupling regime, the grains exhibit Coulomb blockade and discrete energy levels. Electron-electron interactions…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 D. Davidovic , A. Anaya , A. L. Korotkov , M. Bowman , M. Tinkham

We demonstrate a close relation between Coulomb effects in non-local electron transport and non-local shot noise in three-terminal metallic conductors. Provided the whole structure is normal, cross-correlations in shot noise are negative…

Mesoscale and Nanoscale Physics · Physics 2012-03-09 D. S. Golubev , A. D. Zaikin

We study the linear conductance of single electron devices showing Coulomb blockade phenomena. Our approach is based on a formally exact path integral representation describing electron tunneling nonperturbatively. The electromagnetic…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Georg Goeppert , Hermann Grabert