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Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum confinement effects of the electron and phonon systems in a…

Mesoscale and Nanoscale Physics · Physics 2010-02-15 C. Weber , A. Fuhrer , C. Fasth , G. Lindwall , L. Samuelson , A. Wacker

The electron-phonon coupling (EPC) is a ubiquitous interaction in condensed systems and plays a vital role in shaping the electronic properties of materials. Yet, achieving coherent manipulation of electron-phonon coupling has posed a…

Materials Science · Physics 2024-05-13 Jicai Zhang , Tien-Dat Tran , Ziwen Wang , Wenhao Yu , Chong Zhang , Marcus Lo , Wenqi Xu , Tran Trung Luu

We propose a fully $ \textit{ab initio} $ approach to predicting thermal attenuation in elastic helium atom scattering amplitudes, validated through strong agreement with experiments on Nb(100) and (3$\times$1)-O/Nb(100) surfaces. Our…

Materials Science · Physics 2024-12-17 Cristóbal Méndez , C. J. Thompson , M. F. Van Duinen , S. J. Sibener , Tomás A. Arias

Nanoscale size-effects drastically alter the fundamental properties of semiconductors. Here, we investigate the dominant role of quantum confinement in the field-effect device properties of free-standing InAs nanomembranes with varied…

The transmission of acoustic phonons is an important element in the design and performance of nano-mechanical devices operating in the mesoscopic limit. Analytic expressions for the power transmission coefficient, T, exist only in the…

Applied Physics · Physics 2019-03-27 John Bartlett , Karwan Rostem , Edward Wollack

This article derives an electron-phonon interaction suitable for interpreting ultrasonic attenuation measurements in the ruthenate and cuprate superconductors. The huge anisotropy found experimentally (Lupien et al., 2001) in Sr2RuO4 in the…

Superconductivity · Physics 2009-11-07 M. B. Walker , M. F. Smith , K. V. Samokhin

We present a tunnel spectroscopy study of single PbS Quantum Dots (QDs) as function of temperature and gate voltage. Three distinct signatures of strong electron-phonon coupling are observed in the Electron Tunneling Spectrum (ETS) of these…

Mesoscale and Nanoscale Physics · Physics 2015-09-10 H. Wang , E. Lhuillier , Q. Yu , A. Mottaghizadeh , C. Ulysse , A. Zimmers , A. Descamps-Mandine , B. Dubertret , H. Aubin

The electronic self-energy is studied for a two dimensional electron gas coupled to a spin-orbit Rashba field and interacting with dispersionless phonons. For the case of a momentum independent electron-phonon coupling (Holstein model) we…

Strongly Correlated Electrons · Physics 2009-11-13 E. Cappelluti , C. Grimaldi , F. Marsiglio

Understanding of the energy exchange between electrons and phonons in metals is important for micro- and nano-manufacturing and system design. The electron-phonon (e-ph) coupling constant is to describe such exchange strength, yet its…

Mesoscale and Nanoscale Physics · Physics 2021-03-17 Wuli Miao , Moran Wang

Realising controlled quantum dynamics via the magnetic interactions between colour centers in diamond remains a challenge despite recent demonstrations for nanometer separated pairs. Here we propose to use the intrinsic acoustical phonons…

Quantum Physics · Physics 2013-08-08 Andreas Albrecht , Alex Retzker , Fedor Jelezko , Martin B. Plenio

A nonperturbative dynamical coupling approach based on tight-binding molecular dynamics is used to evaluate the electron-ion (electron-phonon) coupling parameter in irradiated semiconductors as a function of the electronic temperature up to…

Materials Science · Physics 2023-10-25 Nikita Medvedev

A microscopic theory of the phonon-induced resistance oscillations in weak perpendicular magnetic fields is presented. The calculations are based on the consideration of interaction of two-dimensional electrons with three-dimensional (bulk)…

Mesoscale and Nanoscale Physics · Physics 2010-03-02 O. E. Raichev

We study the strength of the electron-phonon interaction on Fe single adatoms on MgO/Ag(100) based on many-body \textit{ab-initio} spin collinear calculations. In particular, we analyze the relative importance of the substrate and, among…

Mesoscale and Nanoscale Physics · Physics 2021-11-19 Haritz Garai-Marin , Julen Ibañez-Azpiroz , Peio Garcia-Goiricelaya , Idoia G. Gurtubay , Asier Eiguren

We study the effects of electron-phonon interactions on the transport properties of a molecular quantum dot coupled to two Luttinger-liquid leads. In particular, we investigate the effects on the steady state current and DC noise…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 So Takei , Yong Baek Kim , Aditi Mitra

We calculate the nonequilibrium local density of states on a vibrational quantum dot coupled to two electrodes at T=0 using a numerically exact diagrammatic Monte Carlo method. Our focus is on the interplay between the electron-phonon…

Mesoscale and Nanoscale Physics · Physics 2015-03-03 Klaus Ferdinand Albrecht , Alvaro Martin-Rodero , Johannes Schachenmayer , Lothar Mühlbacher

A new scheme for constructing approximate effective electron potentials within density-functional theory is proposed. The scheme consists of calculating the effective potential for a series of reference systems, and then using these…

Condensed Matter · Physics 2016-08-14 K. Stokbro , N. Chetty , K. W. Jacobsen , J. K. Nørskov

The electron spin resonance (ESR) of two-dimensional electrons is investigated in a gated GaAs/AlGaAs heterostructure. We found that the ESR resonance frequency can be turned by means of a gate voltage. The front and back gates of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 H. W. Jiang , E. Yablonovitch

To understand the pressure-induced changes in the electronic structure and the electron-phonon interaction in yttrium, we have studied hexagonal close-packed (hcp) yttrium, stable at ambient pressure and double hexagonal close-packed (dhcp)…

Superconductivity · Physics 2007-05-23 Prabhakar P. Singh

We present a theoretical study of electron-phonon scattering effects in thin films made of a strong topological insulator. Phonons are modelled by isotropic elastic continuum theory with stress-free boundary conditions, and the interaction…

Mesoscale and Nanoscale Physics · Physics 2012-01-26 Sébastien Giraud , Arijit Kundu , Reinhold Egger

The ability to perform first-principles calculations of electronic and vibrational properties of two-dimensional heterostructures in a field-effect setup is crucial for the understanding and design of next-generation devices. We present…

Materials Science · Physics 2017-09-06 Thibault Sohier , Matteo Calandra , Francesco Mauri
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