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The theory of the interaction of electrons with acoustic phonons in multilayer nitride-based AlN/GaN nanostructures was developed for the first time at $T\geqslant 0$ using the method of finite-temperature Green's functions and Dyson…

Mesoscale and Nanoscale Physics · Physics 2021-01-20 I. V. Boyko , M. R. Petryk

Quantum stochastic operator equations are derived for inter-branch exciton and polariton processes caused by acoustic phonon scattering. The use of a fully quantum model combined with these recently developed techniques predicts the…

Condensed Matter · Physics 2007-05-23 P. Kinsler

The effect of phonons on a nonlinear optical response of a quantum dot-cavity system in quantum strong coupling regime can be accounted for by a fully analytical treatment, provided that the exciton-phonon dynamics is much faster than the…

Mesoscale and Nanoscale Physics · Physics 2023-06-30 L. S. Sirkina , E. A. Muljarov

We consider pseudogap effects for electrons interacting with gapless modes. We study both generic 1D semiconductors with acoustic phonons and incommensurate charge density waves. We calculate the subgap absorption as it can be observed by…

Strongly Correlated Electrons · Physics 2007-05-23 S. Brazovskii , S. I. Matveenko

Phonons strongly influence the optical control of semiconductor quantum dots. When modeling the electron-phonon interaction in several theoretical approaches the quantum dot geometry is approximated by a spherical structure, though typical…

Mesoscale and Nanoscale Physics · Physics 2018-01-17 S. Lüker , T. Kuhn , D. E. Reiter

We present a thorough analysis of the electron density distribution (shape) of two electrons, confined in the three-dimensional harmonic oscillator potential, as a function of the perpendicular magnetic field.Explicit algebraic expressions…

Mesoscale and Nanoscale Physics · Physics 2018-03-20 N. S. Simonovic , R. G. Nazmitdinov

Optical transitions in a semiconductor quantum dot are theoretically investigated, with emphasis on the coupling to longitudinal optical phonons, and including excitonic effects. When limiting to a finite number of $m$ electron and $n$ hole…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 T. Stauber , R. Zimmermann

The modification of acoustic phonons in semiconductor nanostructures embedded in a host crystal is investigated including corrections due to strain within continuum elasticity theory. Effective elastic constants are calculated employing…

Materials Science · Physics 2009-11-11 Frank Grosse , Roland Zimmermann

A new microscopic approach to the optical transitions in quantum dots and quantum dot molecules, which accounts for both diagonal and non-diagonal exciton-phonon interaction, is developed. The cumulant expansion of the linear polarization…

Other Condensed Matter · Physics 2015-06-25 E. A. Muljarov , T. Takagahara , R. Zimmermann

The theory of Raman scattering by the electron--phonon coupled system in metals and heavily doped semiconductors is developed taking into account the Coulomb screening and the electron--phonon deformation interaction. The Boltzmann equation…

Materials Science · Physics 2009-11-10 L. Falkovsky

Electron dynamics in quantum dots manifests itself in spin-flip spectra through electric dipole spin resonance (EDSR). Near a neutrality point separating two different singlet charged states of a double quantum dot, charge dynamics inside a…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Emmanuel I. Rashba

Interactions between mesoscopic devices induced by interface acoustic phonons propagating in the plane of a two-dimensional electron system (2DES) are investigated by phonon-spectroscopy. In our experiments ballistic electrons injected from…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 G. J. Schinner , H. P. Tranitz , W. Wegscheider , J. P. Kotthaus , S. Ludwig

The ab-initio theory of charge transport in semiconductors typically employs the lowest-order perturbation theory in which electrons interact with one phonon (1ph). This theory is accepted to be adequate to explain the low-field mobility of…

Materials Science · Physics 2023-02-08 Benjamin Hatanpää , Alexander Y. Choi , Peishi S. Cheng , Austin J. Minnich

Nonreciprocal effects in nanoelectronic devices offer unique possibilities for manipulating electron transport and engineering quantum electronic circuits for information processing purposes. However, a lack of rigorous theoretical tools is…

Quantum Physics · Physics 2020-09-15 Junjie Liu , Dvira Segal

We demonstrate full suppression of dephasing tied to deformation potential coupling of confined electrons to longitunidal acoustic (LA) phonons in optical control experiments on large semiconductor quantum dots (QDs) with emission…

Mesoscale and Nanoscale Physics · Physics 2020-12-07 A. Ramachandran , G. R. Wilbur , S. O'Neal , D. G. Deppe , K. C. Hall

We study the effect of the electron-phonon coupling on vibrational eigenmodes of nano- and micro-mechanical systems made of semiconductors with equivalent energy valleys. We show that the coupling can lead to a strong mode nonlinearity. The…

Mesoscale and Nanoscale Physics · Physics 2017-03-01 Kirill Moskovtsev , M. I. Dykman

We calculate the conductance through strongly correlated T-shaped molecular or quantum dot systems under the influence of phonons. The system is modelled by the extended Anderson-Holstein Hamiltonian. The finite-U mean-field slave boson…

Mesoscale and Nanoscale Physics · Physics 2021-12-22 P. Florków , S. Lipiński

Electron-phonon coupling is known to play an important role in the charge dynamics of semiconductor quantum dots. Here we explore its role in the combined charge-photon dynamics of cavity-coupled double quantum dots. Previous work on these…

Mesoscale and Nanoscale Physics · Physics 2018-01-17 M. J. Gullans , J. M. Taylor , J. R. Petta

The excited state dynamics of correlated electron and electron-phonon systems triggered by an oscillating electric-field pulse of large amplitude are theoretically investigated. A "negative-temperature" state and inversion of…

Strongly Correlated Electrons · Physics 2015-04-06 Kenji Yonemitsu , Keita Nishioka

We investigate the scattering of an electron by phonons in a small structure between two one-dimensional tight-binding leads. This model mimics the quantum electron transport through atomic wires or molecular junctions coupled to metallic…

Strongly Correlated Electrons · Physics 2017-02-27 C. Brockt , E. Jeckelmann