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We attempt to provide physical interpretations of light-induced desorption phenomena that have recently been observed for alkali atoms on glass surfaces of alkali vapor cells used in atomic physics experiments. We find that the observed…

其他凝聚态物理 · 物理学 2007-05-23 Atsushi Hatakeyama , Markus Wilde , Katsuyuki Fukutani

The interaction between the field emission resonance states and the photodetached electron in an electric field is studied by semiclassical theory. An analytical expression of the photodetachment cross section is derived in the framework.…

原子物理 · 物理学 2015-05-13 Yan Han , Lifei Wang , Ningyu Yang , Shiyong Ran , Guangcan Yang

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…

介观与纳米尺度物理 · 物理学 2021-07-07 A. D. Chepelianskii , D. Konstantinov , M. I. Dykman

We theoretically investigate an exciton transfer process in a donor domain of organic photovoltaic cells focusing on the roles of local and nonlocal electron-phonon interactions. Our model consists of a three-level system described by the…

材料科学 · 物理学 2021-01-25 Mauro Cainelli , Yoshitaka Tanimura

For a one-dimensional electron-phonon system we consider the photon absorption involving electronic excitations within the pseudogap energy range. In the framework of the adiabatic approximation for the electron - phonon interactions these…

强关联电子 · 物理学 2007-05-23 S. I. Matveenko , S. Brazovskii

When redox active molecules are covalently tethered to the surface of the n-doped silicon, light induces their oxidation by the semiconductor. To visualize this charge separation we have followed the formation and decay of the surface…

材料科学 · 物理学 2008-12-31 Andrei V. Pakoulev , Vladimir Burtman , Dmitry Zaslavsky

Diffraction of light at lateral inhomogenities is a central process in the near-field studies of nanoscale phenomena, especially the propagation of surface waves. Theoretical description of this process is extremely challenging due to…

介观与纳米尺度物理 · 物理学 2021-02-24 Egor Nikulin , Denis Bandurin , Dmitry Svintsov

We study theoretically electron transients in semiconductor alloys excited by light pulses shorter than 100 femtoseconds and tuned above the absorption edge during and shortly after the pulse, when disorder scattering is dominant. We use…

无序系统与神经网络 · 物理学 2016-08-16 A. Kalvová , B. Velický

For a one-dimensional electron-phonon system we consider the photon absorption involving electronic excitations within the pseudogap energy range. Within the adiabatic approximation for the electron - phonon interactions these processes are…

强关联电子 · 物理学 2009-11-07 S. I. Matveenko , S. A. Brazovskii

We develop a detailed theoretical model of photo-induced proton-coupled electron transfer (PPCET) processes, which are at the basis of solar energy harvesting in biological systems and photovoltaic materials. Our model enables to analyze…

化学物理 · 物理学 2021-04-13 Jiaji Zhang , Raffaele Borrelli , Yoshitaka Tanimura

We propose a theory of optically-induced currents in dielectrics and wide-gap semiconductors exposed to a non-resonant ultrashort laser pulse with a stabilized carrier-envelope phase. In order to describe strong-field electron dynamics,…

材料科学 · 物理学 2016-08-05 Stanislav Yu. Kruchinin , Michael Korbman , Vladislav S. Yakovlev

We study the dependence of the heat transfer between two semi-infinite solids on the dielectric properties of the bodies. We show that the heat transfer at short separation between the solids may increase by many order of magnitude when the…

材料科学 · 物理学 2009-11-11 A. I. Volokitin , B. N. J. Persson

We present a general embedding theory of electronic excitations of a relatively small, localized system in contact with an extended, chemically complex environment. We demonstrate how to include the screening response of the environment…

材料科学 · 物理学 2010-03-02 Johannes Lischner , Dominika Zgid , Garnet Kin-Lic Chan , T. A. Arias

We propose a new mode of operation of an electron pump consisting of two weakly coupled quantum dots connected to reservoirs. An electron can be transferred within the device at zero bias voltage when it is subjected to electromagnetic…

介观与纳米尺度物理 · 物理学 2009-10-31 B. L. Hazelzet , M. R. Wegewijs , T. H. Stoof , Yu. V. Nazarov

We investigate entanglement transfer from a system of two spin-entangled electron-hole pairs, each placed in a separate single mode cavity, to the photons emitted during their recombination process. Dipole selection rules and a splitting…

介观与纳米尺度物理 · 物理学 2010-06-24 Jan C. Budich , Bjoern Trauzettel

Density-density response functions are evaluated for nondegenerate multisubband electron systems in the random-phase approximation for arbitrary wave number and subband index. We consider both quasi-two-dimensional and quasi-one-…

强关联电子 · 物理学 2009-10-31 Sviatoslav S. Sokolov , Nelson Studart

Laser-assisted electron scattering (LAES), a light-matter interaction process that facilitates energy transfer between strong light fields and free electrons, has so far been observed only in gas phase. Here we report on the observation of…

In exploring the light-induced dynamics within the linear response regime, this study investigates the induced orbital angular momentum on a wide variety of electronic structures. We derive a general expression for the torque induced by…

介观与纳米尺度物理 · 物理学 2023-11-28 Philippe Scheid , Stéphane Mangin , Sébastien Lebègue

Ionization of atoms and molecules in laser fields can lead to various interesting interference structures in the photoelectron spectrum. For the case of a super-intense extreme ultraviolet laser pulse, we identify a novel petal-like…

原子物理 · 物理学 2022-03-29 Lei Geng , Hao Liang , K. Krajewska , Liang-You Peng , Qihuang Gong

Organic solar cells are a promising avenue for renewable energy, and our study introduces a comprehensive model to investigate exciton dissociation processes at the donor-acceptor interface. Examining quantum efficiency and emitted phonons…

材料科学 · 物理学 2025-02-05 Jouda Jemaa Khabthani , Khouloud Chika , Alexandre Perrin , Didier Mayou