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The conductance of a molecular junction is commonly determined by either charge-transfer-doping, where alignment of the Fermi energy to the molecular levels is achieved, or tunnelling through the tails of molecular resonances within the…

介观与纳米尺度物理 · 物理学 2016-08-31 R. Gutierrez , G. Fagas , K. Richter , F. Grossmann , R. Schmidt

We study the quantum nature of current through plasma-probe junction from the viewpoint of the metal probe. The intrinsic material properties of the metal and their influence on the nature of the observed current are theoretically worked…

等离子体物理 · 物理学 2024-01-26 Muthukumar Balasundaram , Suraj Kumar Sinha

In this work we consider a current carrying molecular junction with both electron-phonon and electron-electron interactions taken into account. After performing Lang-Firsov transformation and considering Markov approximations in accordance…

介观与纳米尺度物理 · 物理学 2019-05-06 Amir Eskandari-asl

We present combined experimental and theoretical study of photo-induced current in molecular junctions consisting of monolayers of nitroazobenzene oligomers chemisorbed on carbon surfaces and illuminated by UV-Vis light through a…

介观与纳米尺度物理 · 物理学 2019-03-22 Kuniyuki Miwa , Amin Morteza Najarian , Richard L. McCreery , Michael Galperin

For the study of molecular spin junctions, we take into account two types of couplings between the molecule and the metal leads: (i) electron transfer that gives rise to net current in the biased junction and (ii) energy transfer between…

介观与纳米尺度物理 · 物理学 2009-04-23 M. Jouravlev , Kwang S. Kim

We investigate transport through a tunnelling junction between an uncorrelated metallic lead and a Luttinger liquid when the latter is subjected to a time dependent perturbation. The tunnelling current as well as the electron energy…

强关联电子 · 物理学 2009-11-07 Andrei Komnik , Alexander O. Gogolin

The peculiarities of electric current in high-resistance materials, such as semiconductors or semimetals, irradiated by ion beams are considered. It is shown that after ion--beam irradiation an unusual electric current may arise directed…

凝聚态物理 · 物理学 2015-06-24 V. I. Yukalov , E. P. Yukalova

The non-symmetrized current noise is crucial for the analysis of light emission in nanojunctions. The latter represent non-classical photon emitters whose description requires a full quantum approach. It was found experimentally that light…

介观与纳米尺度物理 · 物理学 2020-06-24 Hongxin Zhan , Gianluca Rastelli , Wolfgang Belzig

Currently, molecular tunnel junctions are recognized as important active elements of various nanodevices. This gives a strong motivation to study physical mechanisms controlling electron transport through molecules. Electron motion through…

介观与纳米尺度物理 · 物理学 2013-01-24 Natalya A. Zimbovskaya

Inelastic tunneling of electrons can generate the emission of photons with energies intuitively limited by the applied bias voltage. However, experiments indicate that more complex processes involving the interaction of electrons with…

介观与纳米尺度物理 · 物理学 2016-12-06 Fei Xu , Cecilia Holmqvist , Gianluca Rastelli , Wolfgang Belzig

We investigate transport properties of molecular junctions under two types of bias--a short time pulse or an AC bias--by combining a solution for the Green functions in the time domain with electronic structure information coming from ab…

介观与纳米尺度物理 · 物理学 2010-06-18 San-Huang Ke , Rui Liu , Weitao Yang , Harold U. Baranger

Electrically connected and plasmonically enhanced molecular junctions combine the optical functionalities of high field confinement and enhancement (cavity function), and of high radiative efficiency (antenna function) with the electrical…

We observed a light-induced enhancement of the tunneling current propagating through an array of parallel carbon chains anchored between gold nanoparticles (NPs). In the presence of laser radiation characterized by a wavelength close to the…

A normally incident light of linear polarization injects a pure spin current in a strip of 2-dimensional electron gas with spin-orbit coupling. We report observation of an electric current with a butterfly-like pattern induced by such a…

介观与纳米尺度物理 · 物理学 2007-06-19 Xiao-Dong Cui , Shun-Qing Shen , Jian Li , Weikun Ge , Fu-Chun Zhang

We theoretically investigate a photosystem II-based reaction center modeled as a nonequilibrium quantum junction. We specifically focus on the electron-electron interactions that enable cotunneling events to be captured through quantum…

介观与纳米尺度物理 · 物理学 2024-10-16 Debasish Sharma , Manash Jyoti Sarmah , Mriganka Sandilya , Himangshu Prabal Goswami

Current experimental and theoretical studies on the effect of intermolecular interactions on molecular conduction appear to be in conflict with each other. In particular, some experimental results, e.g., the observation of 2-dimensional…

介观与纳米尺度物理 · 物理学 2007-07-23 A. Landau , L. Kronik , A. Nitzan

A minimal model for coherent transport through a donor/acceptor molecular junction is presented. The two donor and acceptor sites are described by single levels energetically separated by an intramolecular tunnel barrier. In the limit of…

无序系统与神经网络 · 物理学 2009-11-11 Florian Pump , Gianaurelio Cuniberti

In this work we theoretically study steady state thermoelectric transport through a single-molecule junction with a long chain-like bridge. Electron transmission through the system is computed using a tight-binding model for the bridge. We…

介观与纳米尺度物理 · 物理学 2018-03-02 Natalya A. Zimbovskaya , Abraham Nitzan

Atomic sized plasmonic tunnel junctions are of fundamental interest, with great promise as the smallest on-chip light sources in various optoelectronic applications. Several mechanisms of light emission in electrically driven plasmonic…

介观与纳米尺度物理 · 物理学 2022-11-09 Yunxuan Zhu , Longji Cui , Mahdiyeh Abbasi , Douglas Natelson

In order to study the tunneling of electrons through an interacting, 1D, dimerized molecule connected to leads, we consider the persistent current in a ring embedding this molecule. We find numerically that, for spinless fermions, a…

强关联电子 · 物理学 2009-10-31 Julien Favand , Frederic Mila