中文
相关论文

相关论文: Electron Dynamics in a Coupled Quantum Point Conta…

200 篇论文

The magnetization of quantum dots is discussed in terms of a relatively simple but exactly solvable model Hamiltonian. The model predicts oscillations in spin polarization as a function of dot radius for a fixed electron density. These…

介观与纳米尺度物理 · 物理学 2007-10-11 A. Bansil , D. Nissenbaum , B. Barbiellini , R. Saniz

The electron motion in rather strong magnetic fields (when only the lowest Landau level is populated) is considered. In this case the electron kinetic energy is frozen out and the electrons are guided by slowly varied potential. Using the…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Matulis

We apply the non-equilibrium functional renormalization group approach treating flow of the electronic self-energies, to describe local magnetic moments formation and electronic transport in a quadruple quantum dot (QQD) ring, coupled to…

强关联电子 · 物理学 2019-04-17 V. S. Protsenko , A. A. Katanin

A transport methodology to study the electron transport between quantum dots arrays based in Transfer Hamiltonian approach is presented. The interactions between the quantum dots and between the quantum dots and the electrodes are…

介观与纳米尺度物理 · 物理学 2012-05-10 S. Illera , N. Garcia-Castello , J. D. Prades , A. Cirera

Hyperfine interaction of electron spins with nuclear spins, in coupled double quantum dots is studied. Results of successive electron spin measurements exhibit bunching due to correlations induced via the nuclear spins. Further nuclear…

介观与纳米尺度物理 · 物理学 2009-11-11 Ozgur Cakir , Toshihide Takagahara

We examine the spatial distribution of electrons generated by a fixed energy point source in uniform, parallel electric and magnetic fields. This problem is simple enough to permit analytic quantum and semiclassical solution, and it harbors…

量子物理 · 物理学 2007-05-23 Christian Bracher , Tobias Kramer , John B. Delos

We investigate transport properties of different realizations of one-dimensional quantum wires coupled to a number of external electrodes in terms of the full counting statistics. Focusing on the set-ups in which edge states of Majorana…

介观与纳米尺度物理 · 物理学 2016-03-15 A. Komnik

We simulate the dynamics of a single-electron source, modeled as a quantum dot with on-site Coulomb interaction and tunnel coupling to an adjacent lead, in time-dependent density functional theory. Based on this system, we develop a…

介观与纳米尺度物理 · 物理学 2018-04-18 Niklas Dittmann , Janine Splettstoesser , Nicole Helbig

Electronic transport through a quantum wire sandwiched between two metallic electrodes and coupled to a quantum ring, threaded by a magnetic flux $\phi$, is studied. An analytic approach for the electron transport through the bridge system…

介观与纳米尺度物理 · 物理学 2009-11-06 Santanu K. Maiti

We calculate non-perturbatively the inelastic effects on the conductance through a conjugated molecular wire-metal heterojunction, including realistic electron-phonon coupling. We show that at sub-band-gap energies the current is dominated…

材料科学 · 物理学 2009-10-31 H. Ness , A. J. Fisher

We investigate the transport properties of a quantum wire of weakly interacting fermions in the presence of local particle loss. We calculate current and conductance in this system due to applied external chemical potential bias that can be…

We use a generalized master equation (GME) to describe the nonequilibrium magnetotransport of interacting electrons through a broad finite quantum wire with an embedded ring structure. The finite quantum wire is weakly coupled to two broad…

介观与纳米尺度物理 · 物理学 2012-03-15 Vidar Gudmundsson , Chi-Shung Tang , Olafur Jonasson , Valeriu Moldoveanu , Andrei Manolescu

We develop a unified theoretical description of the induced interaction and quantum noise in a system of two spins (qubits) coupled via a quasi-one-dimensional electron gas in the Luttinger liquid regime. Our results allow evaluation of the…

介观与纳米尺度物理 · 物理学 2010-10-12 Dmitry Mozyrsky , Alexander Dementsov , Vladimir Privman

We consider theoretically the possibility of an electron acceleration in quantum wire by short magnetic pulses lasted bewteen several to few tens of picoseconds. We show that such possibility exists provided that, the electron is initially…

介观与纳米尺度物理 · 物理学 2016-06-08 Tomasz Chwiej

We show that the interaction constant governing the long-range electron-electron interaction in a quantum wire coupled to two reservoirs and capacitively coupled to a gate can be determined by a low frequency measurement. We present a…

介观与纳米尺度物理 · 物理学 2009-10-30 Ya. M. Blanter , F. W. J. Hekking , M. Buttiker

We study the quantum dynamics of a strongly correlated electron pair in a one-dimensional lattice, focusing on the occurrence of local dissociation/pairing mechanisms induced by a site energy defect. To this end, we simulate the time…

强关联电子 · 物理学 2025-06-17 Vincent Pouthier , Saad Yalouz

An analytical expression for the current through a single level quantum dot for arbitrary strength of the on-site electron-electron interaction is derived beyond standard mean-field theory. By describing the localised states in terms of…

介观与纳米尺度物理 · 物理学 2007-05-23 J. Fransson

Willis dynamic homogenization theory revealed that the effective linear momentum of elastic composites is coupled to their effective strain. % This result, which is partially due to asymmetry at the subwavelength scale, implies that…

材料科学 · 物理学 2023-08-16 Kevin Muhafra , Michael R. Haberman , Gal Shmuel

In the paper the dynamic localization of charged particle (electron) in a quantum wire under the external non-uniform time-dependent electric field is considered. The electrons are trapped in a deep 'dynamic' quantum wells which are the…

介观与纳米尺度物理 · 物理学 2009-11-10 Igor Tralle

We study the conductance of a quantum wire in the presence of weak electron-electron scattering. In a sufficiently long wire the scattering leads to full equilibration of the electron distribution function in the frame moving with the…

介观与纳米尺度物理 · 物理学 2009-03-19 J. Rech , T. Micklitz , K. A. Matveev