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We consider the resonant tunneling through a multi-level system. It is demonstrated that the resonant current displays quantum interference effects due to a possibility of tunneling through different levels. We show that the interference…

介观与纳米尺度物理 · 物理学 2009-11-10 S. A. Gurvitz

Experimental results for sequential transport through a lateral quantum dot in the regime of spin blockade induced by spin dependent tunneling are compared with theoretical results obtained by solving a master equation for independent…

介观与纳米尺度物理 · 物理学 2007-05-23 M. C. Rogge , F. Cavaliere , M. Sassetti , R. J. Haug , B. Kramer

We calculate correction to the nuclear fission barrier produced by the atomic electrons. The result presented in analytical form is convenient to use in future nuclear calculations. The atomic electrons have a small stabilizing effect on…

原子物理 · 物理学 2008-12-18 V. A. Dzuba , V. V. Flambaum

We predict and study the quantum-electrodynamical effect of parametric self-induced excitation of a molecule moving above the dielectric or conducting medium with periodic grating. In this case the radiation reaction force modulates the…

量子物理 · 物理学 2016-09-08 Alexey Belyanin , Federico Capasso , Vitaly Kocharovsky , Vladimir Kocharovsky

Magneto-polaronic effects are considered in electron transport through a single-level vibrating quantum dot subjected to a transverse (to the current flow) magnetic field. It is shown that the effects are most pronounced in the regime of…

介观与纳米尺度物理 · 物理学 2012-11-13 G. A. Skorobagatko , S. I. Kulinich , I. V. Krive , R. I. Shekhter , M. Jonson

We study the subgap transport properties of a small capacitance normal metal-superconductor tunnel junction coupled to an external electromagnetic environment. Mesoscopic interference between the electrons in the normal metal strongly…

介观与纳米尺度物理 · 物理学 2009-10-30 Andrea Huck , F. W. J. Hekking , Bernhard Kramer

We observe large, reversible, bias driven changes in the vibrational energies of PCBM, based on simultaneous transport and surface-enhanced Raman spectroscopy (SERS) measurements on PCBM-gold junctions. A combination of linear and quadratic…

介观与纳米尺度物理 · 物理学 2016-05-11 Yajing Li , Pavlo Zolotavin , Peter Doak , Leeor Kronik , Jeffrey B. Neaton , Douglas Natelson

Quantum particles can penetrate potential barriers by tunneling (1). If that barrier is rotating, the tunneling process is modified (2,3). This is typical for electrons in atoms, molecules or solids exposed to strong circularly polarized…

We present explicit kinetic equations for quantum transport through a general molecular quantum-dot, accounting for all contributions up to 4th order perturbation theory in the tunneling Hamiltonian and the complete molecular density…

介观与纳米尺度物理 · 物理学 2009-11-13 M. Leijnse , M. R. Wegewijs

We theoretically and experimentally examine the effects of anharmonic terms in the trapping potential for linear chains of trapped ions. We concentrate on two different effects that become significant at different levels of anharmonicity.…

量子物理 · 物理学 2015-05-28 J. P. Home , D. Hanneke , J. D. Jost , D. Leibfried , D. J. Wineland

We show that when a molecular junction is under an external bias, its properties can not be uniquely determined by the total electron density in the same manner as the density functional theory (DFT) for ground state (GS) properties. In…

介观与纳米尺度物理 · 物理学 2013-11-26 Shuanglong Liu , Yuan Ping Feng , Chun Zhang

We perform molecular dynamics simulations to assess the screening effects by bound target electrons in low energy nuclear reactions in laboratories. Quantum effects corresponding to the Pauli and Heisenberg principle are enforced by…

核理论 · 物理学 2009-09-29 Sachie Kimura , Aldo Bonasera

The non-perturbation theory of electronic dynamic conductivity for open two-barrier resonance tunnel structure is established for the first time within the model of rectangular potentials and different effective masses of electrons in the…

介观与纳米尺度物理 · 物理学 2012-02-22 M. V. Tkach , Ju. O. Seti , O. M. Voitsekhivska

We investigate the role of electronic-vibrational coupling in resonant electron transport through single-molecule junctions, taking into account that the corresponding coupling strengths may depend on the charge and excitation state of the…

介观与纳米尺度物理 · 物理学 2016-03-23 Andre Erpenbeck , Rainer Härtle , Michel Bockstedte , Michael Thoss

Recently observed Aharonov-Bohm quantum interference of period h/2e in charge density wave rings strongly suggest that correlated density wave electron transport is a cooperative quantum phenomenon. The picture discussed here posits that…

强关联电子 · 物理学 2015-05-30 J. H. Miller , A. I. Wijesinghe , Z. Tang , A. M. Guloy

The tunneling through an opaque barrier with a strong oscillating component is investigated. It is shown, that in the strong perturbations regime (in contrast to the weak one), higher perturbations rate does not necessarily improve the…

量子物理 · 物理学 2007-05-23 Er'el Granot

Magnetic noise from randomly fluctuating nuclear spin ensembles is the dominating source of decoherence for many multi-quantum-dot multielectron spin qubits. Here we investigate in detail the effect of a DC electric current on the coupled…

介观与纳米尺度物理 · 物理学 2020-04-21 Jørgen Holme Qvist , Jeroen Danon

Resonant electron transport through a mesoscopic region (quantum dot or single molecule) with electron-phonon interaction is considered at finite voltage. In this case the standard Landauer-B\"uttiker approach cannot be applied. Using the…

介观与纳米尺度物理 · 物理学 2009-11-10 D. A. Ryndyk , J. Keller

We report a first principles formalism and its numerical implementation for treating quantum transport properties of nanoelectronic devices with atomistic disorder. We developed a nonequilibrium vertex correction (NVC) theory to handle the…

介观与纳米尺度物理 · 物理学 2007-12-21 Youqi Ke , Ke Xia , Hong Guo

We consider charge transport through a nanoscopic object, e.g. single molecules, short nanotubes, or quantum dots, that is weakly coupled to metallic electrodes. We account for several levels of the molecule/quantum dot with level-dependent…

介观与纳米尺度物理 · 物理学 2007-05-23 A. Thielmann , M. H. Hettler , J. König , G. Schön
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