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Related papers: Current-induced forces in mesoscopic systems: a sc…

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We develop a new approach to electron transport in mesoscopic systems by using a particular single-particle basis. Although this basis generates redundant many-particle amplitudes, it greatly simplifies the treatment. By using our method…

Mesoscale and Nanoscale Physics · Physics 2015-10-28 Shmuel Gurvitz

In this communication we apply the Landauer method and transfer matrix formalism to the calculation of spin current in magnetic multilayered structures within a ballistic quantum-mechanical regime. The method provides an elegant and…

Mesoscale and Nanoscale Physics · Physics 2019-06-17 Valentin Fadeev , Andrey Umerski

Using a new developed Single-Electron approach, we derive the Landauer-type formula for electron transport in arbitrary time-dependent potentials. This formula is applied for randomly fluctuating potentials represented by a dichotomic…

Mesoscale and Nanoscale Physics · Physics 2019-04-11 Shmuel Gurvitz

We present a detailed theoretical investigation of the effect of Coulomb interactions on electron transport through quantum dots and double barrier structures connected to a voltage source via an arbitrary linear impedance. Combining real…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Dmitri S. Golubev , Andrei D. Zaikin

We propose a phenomenological model of dephasing in mesoscopic transport, based on the introduction of random phase fluctuations in the computation of the scattering matrix of the system. A Monte Carlo averaging procedure allows us to…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Marco G. Pala , Giuseppe Iannaccone

Recent experiments have demonstrated the generation of coherent mechanical oscillations in a suspended carbon nanotube, which are driven by an electric current through the device above a certain voltage threshold, in close analogy with a…

Quantum Physics · Physics 2022-10-12 Oisin Culhane , Mark T. Mitchison , John Goold

We perform strategic current injection in a small mesoscopic superconductor and control the (non)equilibrium quantum states in an applied homogeneous magnetic field. In doing so, we realize a current-driven splitting of multi-quanta…

Superconductivity · Physics 2015-05-14 M. V. Milošević , A. Kanda , S. Hatsumi , F. M. Peeters , Y. Ootuka

Previous years researchers began to simulate open quantum system, taking into account the interaction between system and the environment. One approach to deal with this problem is to use the density matrix within the Liouville-von-Neumann…

Quantum Physics · Physics 2025-09-15 Mohammad Attrash , Roi Baer

Spin-motive force, i.e., the electric current induced by magnetization dynamics, is theoretically studied beyond the Thouless-pump paradigm. In contrast to the linear-response regime, where the induced current is purely AC, we show that…

Mesoscale and Nanoscale Physics · Physics 2026-03-13 Tomonari Meguro , Hiroaki Ishizuka , Kentaro Nomura

Long metallic nanowires combine crucial factors for non-conservative current-driven atomic mo- tion. These systems have degenerate vibrational frequencies, clustered about a Kohn anomaly in the dispersion relation, that can couple under…

Mesoscale and Nanoscale Physics · Physics 2015-10-29 Brian Cunningham , Tchavdar N. Todorov , Daniel Dundas

Motivated by the need to understand current-induced magnetization dynamics at the nanoscale, we have developed a formalism, within the framework of Keldysh Green function approach, to study the current-induced dynamics of a ferromagnetic…

Mesoscale and Nanoscale Physics · Physics 2017-05-24 Farzad Mahfouzi , Nicholas Kioussis

Influence of the spin-transfer torque on the vortex state magnetic nanodisk is studied numerically via Slonczewski-Berger mechanism. The existence of a critical current is determined for the case of same-directed electrical current, its…

Mesoscale and Nanoscale Physics · Physics 2015-03-19 Oleksii M. Volkov , Volodymyr P. Kravchuk , Denis D. Sheka , Yuri Gaididei

Casimir physics covers a wealth of phenomena where forces between macroscopic objects are induced by long range fluctuations of either classical or quantum origin. Fluctuations of the quantum electrodynamic vacuum epitomize this type of…

Mesoscale and Nanoscale Physics · Physics 2020-04-15 Ariane Soret , Karyn Le Hur , Eric Akkermans

Small-angle neutron scattering is used in combination with transport measurements to investigate the current-induced effects on the morphology of the intermediate mixed state domains in the intertype superconductor niobium. We report the…

Superconductivity · Physics 2022-02-02 X. S. Brems , S. Mühlbauer , W. Y. Córdoba-Camacho , A. A. Shanenko , A. Vagov , R. Cubitt

It has long been known that quantum particles moving in a periodic lattice and subject to a constant force field undergo an oscillatory motion that is referred to as Bloch Oscillations (BOs). However, it is also known that, under quite…

Mesoscale and Nanoscale Physics · Physics 2023-08-11 J. M. Alendouro Pinho , J. P. Santos Pires , Simão M. João , B. Amorim , J. M. Viana Parente Lopes

The molecular junction geometry is modelled in terms of nuclear degrees of freedom that are embedded in a stochastic quantum environment of non-equilibrium electrons. Time-evolution of the molecular geometry is governed via a mean force, a…

Mesoscale and Nanoscale Physics · Physics 2020-10-28 Vincent F. Kershaw , Daniel S. Kosov

This paper concerns an investigation of the spin wave excitations in magnetic nanoparticles. We provide a detailed derivation of the theoretical method for the determination of the normal modes of confined magnetic systems based on a…

Mesoscale and Nanoscale Physics · Physics 2017-03-21 Sławomir Mamica

We review the properties of electron shuttles, i.e. nanoelectromechanical devices that transport electrons one-by-one by utilizing a combination of electronic and mechanical degrees of freedom. We focus on the extreme quantum limit, where…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 A. P. Jauho , C. Flindt , Tomas Novotny , Andrea Donarini

Without access to the full quantum state, modeling quantum transport in mesoscopic systems requires dealing with a limited number of degrees of freedom. In this work, we analyze the possibility of modeling the perturbation induced by the…

Quantum Physics · Physics 2022-02-04 Matteo Villani , Guillermo Albareda , Carlos Destefani , Xavier Cartoixà , Xavier Oriols

We investigate the transport through a quantum ring, a dot and a barrier embedded in a nanowire in a homogeneous perpendicular magnetic field. To be able to treat scattering potentials of finite extent in magnetic field we use a mixed…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Vidar Gudmundsson , Yu-Yu Lin , Chi-Shung Tang , Valeriu Moldoveanu , Jens Hjorleifur Bardarson , Andrei Manolescu