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We briefly overview our recent results on nonequilibrium interactions between neighboring electrically isolated nanostructures. One of the nanostructures is represented by an externally biased quantum point contact (drive-QPC), which is…

Mesoscale and Nanoscale Physics · Physics 2008-11-25 V. S. Khrapai , S. Ludwig , J. P. Kotthaus , H. P. Tranitz , W. Wegscheider

The interaction of graphene with metallic substrates reveals phenomena and properties of great relevance for applications in nanotechnology. In this review, the vibrational characterization by means of various inelastic scattering…

Materials Science · Physics 2016-01-08 Antonio Politano

We study the influence of the phonon environment on the electron dynamics in a doped quantum dot molecule. A non-perturbative quantum kinetic theory based on correlation expansion is used in order to describe both diagonal and off-diagonal…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 A. Grodecka-Grad , J. Förstner

A novel mesoscopic electron spectrometer allows for the probing of relaxation processes in quantum Hall edge channels. The device is composed of an emitter quantum dot that injects energy-resolved electrons into the channel closest to the…

Mesoscale and Nanoscale Physics · Physics 2019-11-13 Stefan G. Fischer , Jinhong Park , Yigal Meir , Yuval Gefen

We have developed a full quantum microscopic theory to analyze the time evolution of transversal and longitudinal components of an exciton-single photon system coupled to bulk acoustic phonons. These components are subjected to two decay…

Quantum Physics · Physics 2009-11-13 Kunihiro Kojima , Akihisa Tomita

We discuss an integrable model describing one-dimensional electrons interacting with two-dimensional anharmonic phonons. In the low temperature limit it is possible to decouple phonons and consider one-dimensional excitations separately.…

Strongly Correlated Electrons · Physics 2009-10-31 Catherine Pépin , Alexei M. Tsvelik

Plasmons in two-dimensional electron systems (2DES) feature ultra-strong confinement and are expected to efficiently mediate the interactions between light and charge carriers. Despite these expectations, the electromagnetic detectors…

Mesoscale and Nanoscale Physics · Physics 2022-07-01 Dmitry Mylnikov , Dmitry Svintsov

The role of electron-phonon interactions is experimentally and theoretically investigated near the saddle point absorption peak of graphene. The differential optical transmission spectra of multiple, non-interacting layers of graphene…

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

A thorough understanding of the microscopic picture of heat conduction in solids is critical to a broad range of applications, from thermal management of microelectronics to more efficient thermoelectric materials. The transport properties…

Materials Science · Physics 2021-02-04 Yujie Quan , Shengying Yue , Bolin Liao

We theoretically study the electromagnetic wave radiation of magnons driven by acoustic phonons in systems with strong magnon-phonon interaction. We evaluate the field dependence of radiation intensity spectra which exhibits the avoided…

Mesoscale and Nanoscale Physics · Physics 2022-06-10 Yahui Ji , Chenye Zhang , Tianxiang Nan

We present a theoretical framework for quantum-coherent nonlinear interferometry in which the nonlinear medium is modeled as active electron-phonon quantum systems rather than a passive $\chi^{(2)}$ converter. By explicitly retaining the…

Quantum Physics · Physics 2025-10-31 Junya Ogiri , Hiroaki Minamide , Kunio Ishida

Microwave absorption spectra of a single square of two-dimensional electrons (2DES) have been investigated using an optical detection technique. Fundamental dipole and harmonic quadrupole plasmon modes have been identified and compared to…

Mesoscale and Nanoscale Physics · Physics 2023-02-22 A. M. Zarezin , D. Mylnikov , A. S. Petrov , D. Svintsov , P. A. Gusikhin , I. V. Kukushkin , V. M. Muravev

We formulate and study the effective low-energy quantum theory of interacting long-wavelength acoustic phonons in carbon nanotubes within the framework of continuum elasticity theory. A general and analytical derivation of all three- and…

Mesoscale and Nanoscale Physics · Physics 2009-05-14 A. De Martino , R. Egger , A. O. Gogolin

We study electron-acoustic phonon scattering and electron relaxation in quantum rings in the absence and in the presence of external magnetic fields. Electron-phonon interaction is accounted for both the deformation potential and…

Other Condensed Matter · Physics 2007-05-23 G. Piacente , G. Q. Hai

Owing to their extraordinary sensitivity to external forces, nanomechanical systems have become important tools for studying a variety of mesoscopic physical systems and realizing hybrid quantum systems. While nanomechanics has been widely…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 King Yan Fong , Dafei Jin , Menno Poot , Alexander Bruch , Hong X. Tang

In the field of quantum technology, nanomechanical oscillators offer a host of useful properties given their compact size, long lifetimes, and ability to detect force and motion. Their integration with superconducting quantum circuits shows…

Quantum Physics · Physics 2023-02-02 Agnetta Y. Cleland , E. Alex Wollack , Amir H. Safavi-Naeini

A strong electron-phonon interaction in a metal increases the electron density of states in the vicinity of the Fermi energy dramatically. This phenomenon is called electron-phonon mass enhancement. In this paper the question is…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Gerd Bergmann

Nanoelectronic devices embedded in the two-dimensional electron system (2DES) of a GaAs/AlGaAs heterostructure enable a large variety of applications from fundamental research to high speed transistors. Electrical circuits are thereby…

Mesoscale and Nanoscale Physics · Physics 2017-12-20 N. Bachsoliani , S. Platonov , A. D. Wieck , S. Ludwig

Electron transport through a double quantum dot system is studied with taking into account electron-phonon interaction. The Keldysh nonequilibrium Green function formalism is used to compute the current and transmission coefficient of the…

Mesoscale and Nanoscale Physics · Physics 2012-04-11 M. Bagheri Tagani , H. Rahimpour Soleimani