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Related papers: Electronic-vibrational coupling in single-molecule…

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We study the coherent dynamics of one- and two-electron transport in a linear array of tunnel-coupled quantum dots. We find that this system exhibits a rich variety of coherent phenomena, ranging from electron wavepacket propagation and…

Quantum Physics · Physics 2007-05-23 G. M. Nikolopoulos , D. Petrosyan , P. Lambropoulos

Coherent dynamics of coupled molecules are effectively characterized by the two-dimensional (2D) electronic coherent spectroscopy. Depending on the coupling between electronic and vibrational states, oscillating signals of purely…

Chemical Physics · Physics 2013-10-17 Vytautas Butkus , Donatas Zigmantas , Darius Abramavicius , Leonas Valkunas

We measure electron tunneling in single-molecule transistors made from C_{140}, a molecule with a mass-spring-mass geometry chosen as a model system to study electron-vibration coupling. We observe vibration-assisted tunneling at an energy…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. N. Pasupathy , J. Park , C. Chang , A. V. Soldatov , S. Lebedkin , R. C. Bialczak , J. E. Grose , L. A. K. Donev , J. P. Sethna , D. C. Ralph , P. L. McEuen

The electronic and electrical properties of crystalline organic semiconductors, such as the dispersions of the electronic bands and the dependence of charge-carrier mobility on temperature, are greatly impacted by the nonlocal…

Materials Science · Physics 2012-06-06 Yuan Li , Yuanping Yi , Veaceslav Coropceanu , Jean-Luc Brédas

We investigate exciton transport through one-dimensional molecular aggregates interacting strongly with a cavity mode. Unlike several prior theoretical studies treating the monomers as simple two-level systems, exciton-vibration coupling is…

Mesoscale and Nanoscale Physics · Physics 2019-03-14 Jingyu Liu , Qing Zhao , Ning Wu

We present an extension of the tunneling theory for scanning tunneling microcopy (STM) to include different types of vibrational-electronic couplings responsible for inelastic contributions to the tunnel current in the strong-coupling…

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…

Materials Science · Physics 2009-10-31 H. Ness , A. J. Fisher

Experiments have shown that the internal vibrational state of a molecule can affect the intensity of high harmonic light generated from that molecule. This paper presents a model which explains this modulation in terms of interference…

Atomic Physics · Physics 2015-05-13 Zachary B. Walters , Stefano Tonzani , Chris H. Greene

Using molecular dynamics simulation, we investigate transport properties of a classical two-dimensional electron system confined in a microchannel with a narrow constriction. As a function of the confinement strength of the constriction,…

Mesoscale and Nanoscale Physics · Physics 2012-10-18 Moto Araki , Hisao Hayakawa

Quantum beats in nonlinear spectroscopy of molecular aggregates are often attributed to electronic phenomena of excitonic systems, while nuclear degrees of freedom are commonly included into models as overdamped oscillations of bath…

Chemical Physics · Physics 2012-11-27 Vytautas Butkus , Leonas Valkunas , Darius Abramavicius

A full set of vibrationally-resolved cross sections for electron impact excitation of NO(X2{\Pi}, v) molecules is calculated from ab initio molecular dynamics, in the framework of the local-complex-potential approach. Electron-vibration…

Atomic Physics · Physics 2024-11-15 V Laporta , L Vialetto , V Guerra

In this work, we provided a proof-of-principle of efficient production of maximally entangled states using charged quantum dots coupled to vibrational modes. The physical system consists of two pairs of quantum dots, each pair with a single…

Mesoscale and Nanoscale Physics · Physics 2019-10-23 F. M. Souza , P. A. Oliveira , L. Sanz

The vibrations of a coupled pair of isotropic silver spheres are investigated and compared with the vibrations of the single isolated spheres. Situations of both strong coupling and also weak coupling are investigated using continuum…

Mesoscale and Nanoscale Physics · Physics 2010-06-23 Lucien Saviot , D. B. Murray

The interrelationship between a material's structure and its properties lies at the heart of materials-related research. Finding how the changes of one affect the other is of primary importance in theoretical and computational materials…

Mesoscale and Nanoscale Physics · Physics 2024-06-14 Hao Wang , Kah-Meng Yam , Zhuoling Jiang , Na Guo , Chun Zhang

Understanding the current-induced vibrational dynamics in molecular nanojunctions is critical for gaining insight into the stability of such systems. While it is well known that Joule heating at higher bias voltages plays an important role…

Mesoscale and Nanoscale Physics · Physics 2025-03-26 Martin Mäck , Riley J. Preston , Michael Thoss , Samuel L. Rudge

The electrical conductance of molecular junctions may strongly depend on the temperature, and weakly on molecular length, under two distinct mechanisms: phase-coherent resonant conduction, with charges proceeding via delocalized molecular…

Mesoscale and Nanoscale Physics · Physics 2017-12-25 Hyehwang Kim , Dvira Segal

Vibrational polaritons are formed by strong coupling of molecular vibrations and photon modes in an optical cavity. Experiments have demonstrated that vibrational strong coupling can change molecular properties and even affect chemical…

Quantum Physics · Physics 2025-01-14 Thomas Schnappinger , Cyril Falvo , Markus Kowalewski

It is shown that the transport in low temperature, collisional, bounded plasma is enhanced by instabilities at high magnetic field. While the magnetic field confines the electrons in a stable plasma, the instability completely destroys the…

Plasma Physics · Physics 2019-09-04 R. Lucken , A. Bourdon , M. Lieberman , P. Chabert

In the regime of strong coupling between molecular excitons and confined optical modes, the intra-molecular degrees of freedom are profoundly affected, leading to a reduced vibrational dressing of polaritons compared to bare electronically…

Mesoscale and Nanoscale Physics · Physics 2018-10-17 Javier del Pino , Florian A. Y. N. Schröder , Alex W. Chin , Johannes Feist , Francisco J. Garcia-Vidal

In many organic molecules the strong coupling of excess charges to vibrational modes leads to the formation of polarons, i.e., a localized state of a charge carrier and a molecular deformation. Incoherent hopping of polarons along the…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Benjamin B. Schmidt , Matthias H. Hettler , Gerd Schön