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Sequential tunneling model is used to study electron transport in molecular rectifiers based on structures of donor-bridge-acceptor type. The device is made of two metallic electrodes connected by a molecule, which contains acceptor and…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Kamil Walczak

We study electronic transport in long DNA chains using the tight-binding approach for a ladder-like model of DNA. We find insulating behavior with localizaton lengths xi ~ 25 in units of average base-pair seperation. Furthermore, we observe…

Soft Condensed Matter · Physics 2007-05-23 Antonio Rodriguez , Rudolf A. Roemer , Matthew S. Turner

We have developed a homogeneous model of physical chemistry to investigate the neutral-dominated, water-based Enceladus torus. Electrons are treated as the summation of two isotropic Maxwellian distributions$-$a thermal component and a hot…

Earth and Planetary Astrophysics · Physics 2015-05-14 B. L. Fleshman , P. A. Delamere , F. Bagenal

We develop a linear theory of electron transport for a system of two identical quantum wires in a wide range of the wire length L, unifying both the ballistic and diffusive transport regimes. The microscopic model, involving the interaction…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 O. E. Raichev , P. Vasilopoulos

Electrons on the helium surface display sharp resonant absorption lines related to the transitions between the subbands of quantized motion transverse to the surface. A magnetic field parallel to the surface strongly affects the absorption…

Mesoscale and Nanoscale Physics · Physics 2021-07-07 A. D. Chepelianskii , D. Konstantinov , M. I. Dykman

Interaction of excitons with resident charge carriers in semiconductors gives rise to bound three-particle complexes, trions, whose optical response is conveniently described in the framework of many-body correlated Fermi polaron states.…

Mesoscale and Nanoscale Physics · Physics 2024-06-05 Z. A. Iakovlev , M. M. Glazov

Electron transmission through chiral molecules induced by circularly polarized light can be very different for mirror-image structures, a peculiar fact given that the electronic energy spectra of the systems are identical. We propose that…

Chemical Physics · Physics 2009-11-13 Spiros S. Skourtis , David N. Beratan , Ron Naaman , Abraham Nitzan , David H. Waldeck

Electrons move along potential or thermal gradients. In the presence of a global gradient, applied e.g. to the two terminals of a conductor, this induces electric charge and heat currents. They can also flow between two equilibrated…

Mesoscale and Nanoscale Physics · Physics 2018-06-27 Rafael Sánchez

In this work, we revisit the issue of the nature of electronic transport in nickel oxide (NiO) and show that the widely used model of free small polaron hopping, initially raised to characterize transport in high-purity samples, is not…

Other Condensed Matter · Physics 2019-06-26 Robert Karsthof , Marius Grundmann , Markus Arthur Anton , Friedrich Kremer

A long laser beam propagating through an underdense plasma produces a positively charged ion channel by expelling plasma electrons in the transverse direction. We consider the dynamics of a test electron in a resulting two-dimensional…

Plasma Physics · Physics 2015-06-17 Alexey V. Arefiev , Vladimir N. Khudik , Marius Schollmeier

Charge carrier localization in extended atomic systems has been described previously as being driven by disorder, point defects or distortions of the ionic lattice. Here we show for the first time by means of first-principles computations…

Mesoscale and Nanoscale Physics · Physics 2016-05-11 Vojtěch Vlček , Helen R. Eisenberg , Gerd Steinle-Neumann , Daniel Neuhauser , Eran Rabani , Roi Baer

For the first time we calculate the electron transmission phase through a quantum point contact (QPC). The QPC is considered in the saddle point approximation in the single-electron picture. We show that when the electron energy is close to…

Mesoscale and Nanoscale Physics · Physics 2014-10-29 Bryce G. C. Lackenby , Oleg P. Sushkov

Quantum transport for DNA conduction has widely studied with interest in application as a candidate in making nanowires as well as interest in the scientific mechanism. In this paper, we review recent works with concerning the electronic…

Disordered Systems and Neural Networks · Physics 2015-03-13 Hiroaki Yamada , Kazumoto Iguchi

A nanodevice consisting of a conductive cylinder in an axial magnetic field with one-dimensional wires attached to its lateral surface is considered. An explicit form for transmission and reflection coefficients of the system as a function…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 V. A. Margulis , M. A. Pyataev

Predicting the electrical properties of organic molecular crystals (OMCs) is challenging due to their complex crystal structures and electron-phonon (e-ph) interactions. Charge transport in OMCs is conventionally categorized into two…

Materials Science · Physics 2022-04-22 Benjamin K. Chang , Jin-Jian Zhou , Nien-En Lee , Marco Bernardi

A line photon incident in an electron-scattering medium is transferred in a diffusive way both in real space and in frequency space, and the mean number of scatterings changes as the wavelength shifts from the line center. This leads to the…

Astrophysics · Physics 2009-10-31 Hee-Won Lee

Future electron-positron linear colliders require a highly polarized electron beam with a pulse structure that depends primarily on whether the acceleration utilizes warm or superconducting rf structures. The International Linear Collider…

We derive an explict bias dependent expression for electron transfer reaction rate from a solvated redox to a electrode through a bridged molecule of arbitrary length. The interaction of the solvated redox with the solvent is modelled as a…

Mesoscale and Nanoscale Physics · Physics 2010-09-02 A. V. B. Cruz , A. K. Mishra , W. Schmickler

A conduction electron (or hole) together with its self-induced polarisation in a polar semiconductor or an ionic crystal forms a quasi-particle, which is called a polaron. The polaron concept is of interest, not only because it describes…

Strongly Correlated Electrons · Physics 2007-05-23 J. T. Devreese

Since the mass of the electron is very small relative to atomic masses, Thomson scattering of low-energy photons ($h\nu \ll m_ec^2$) produces thermal Doppler frequency shifts that are much larger than atomic Doppler widths. A method is…

Astrophysics · Physics 2011-05-23 G. B. Rybicki , D. G. Hummer