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Several modern technologies for energy storage and conversion are based on the screening of electric charge on the surface of porous electrodes by ions in an adjacent electrolyte. This so-called electric double layer (EDL) exhibits an…

软凝聚态物质 · 物理学 2021-03-15 Fabian Glatzel , Mathijs Janssen , Andreas Härtel

The excitation of semiconductor quantum dots often involves an attached wetting layer with delocalized single-particle energy eigenstates. These wetting-layer states are usually approximated by (orthogonalized) plane waves. We show that…

介观与纳米尺度物理 · 物理学 2019-11-11 Marcel Eichelmann , Jan Wiersig

Over the past two decades, epitaxial semiconductor quantum dots (QDs) have demonstrated very promising properties as sources of single photons and entangled photons on-demand. Among different growth methods, droplet etching epitaxy has…

The changes in excitation dependence of efficiency with temperature is modeled for a wurtzite InGaN light-emitting diode. The model incorporates bandstructure changes with carrier density arising from screening of quantum-confined Stark…

光学 · 物理学 2015-06-16 Weng W. Chow

The effect of melting in planetary mantles plays a key role in their thermo-chemical evolution. Because of the laterally heterogeneous nature of melting, 3D numerical simulations are in principle necessary prohibiting us from exploring wide…

地球与行星天体物理 · 物理学 2021-12-15 Kenny Vilella , Shunichi Kamata

A simple two dimensional model of a phase growing on a substrate is introduced. The model is characterized by an adsorption rate q, and a desorption rate p. It exhibits a wetting transition which may be viewed as an unbinding transition of…

统计力学 · 物理学 2009-10-30 Haye Hinrichsen , Roberto Livi , David Mukamel , Antonio Politi

We have carried out extensive equilibrium molecular dynamics (MD) simulations to study the structure and the interfacial properties in the liquid-vapor (LV) phase coexistence of partially miscible binary Lennard-Jones (LJ) mixtures. By…

软凝聚态物质 · 物理学 2009-11-10 Enrique Díaz-Herrera , José A. Moreno-Razo , Guillermo Ramírez-Santiago

We investigate the temperature dependence of optical absorption spectra of one-dimensional (1D) and two-dimensional (2D) Mott insulators by using an effective model in the strong-coupling limit of a half-filed Hubbard model. In the…

强关联电子 · 物理学 2009-11-10 H. Onodera , T. Tohyama , S. Maekawa

We performed resonant soft X-ray diffraction on known charge density wave (CDW) compounds, rare earth tri-tellurides. Near the $M_5$ (3d - 4f) absorption edge of rare earth ions, an intense diffraction peak is detected at a wavevector…

The influence of indium percentage on dynamical characteristics of InxGa1-xAs/GaAs(001) quantum dot lasers (QDLs) is investigated. Energy levels of self-organized truncated-cone-shape QDs are calculated by means of the eight-band k.p model,…

计算物理 · 物理学 2015-11-04 Mahdi Ahmadi Borji , Esfandiar Rajaei

Based on the infrared improved soft-wall AdS/QCD model which can lead to a consistent prediction for the mass spectra of light resonance mesons, we extend it to the finite temperature system and carry out the calculation for the quark…

高能物理 - 唯象学 · 物理学 2013-05-29 Ling-Xiao Cui , Shingo Takeuchi , Yue-Liang Wu

Quantum systems as used for quantum computation or quantum sensing are nowadays often realized in solid state devices as e.g. complex Josephson circuits or coupled quantum-dot systems. Condensed matter as an environment influences heavily…

介观与纳米尺度物理 · 物理学 2022-11-22 Olfa Dani , Robert Hussein , Johannes C. Bayer , Sigmund Kohler , Rolf J. Haug

We analyse the optical properties of InAs$_{1-x}$Sb$_{x}$/Al$_{y}$In$_{1-y}$As quantum wells (QWs) grown by molecular beam epitaxy on relaxed Al$_{y}$In$_{1-y}$As metamorphic buffer layers (MBLs) using GaAs substrates. The use of…

We consider an Ising model confined in an $L \times \infty$ geometry with identical surface fields at the boundaries. According to the Kelvin equation the bulk coexistence field scales as 1/L for large L; thermodynamics and scaling…

统计力学 · 物理学 2009-10-31 Enrico Carlon , Andrzej Drzewinski , Jos Rogiers

This paper discusses the temperature-dependent properties of (GaIn)As/Ga(AsSb)/(GaIn)As W-quantum well heterostructures for laser applications based on theoretical modeling as well as experimental findings. A microscopic theory is applied…

Using 3D k.p calculation including strain and piezoelectricity we predict variation of electronic and optical properties of InAs/GaAs quantum dots (QDs) with the substrate orientation. The QD transition energies are obtained for high index…

材料科学 · 物理学 2015-06-25 V. Mlinar , F. M. Peeters

We apply the previously developed theory of the resonant indirect exchange interaction to explain the ferromagnetic properties of the hybrid heterostructure consisting of a InGaAs-based quantum well (QW) sandwiched between GaAs barriers…

介观与纳米尺度物理 · 物理学 2015-02-09 I. V. Rozhansky , I. V. Krainov , N. S. Averkiev , B. A. Aronzon , A. B. Davydov , K. I. Kugel , V. Tripathi , E. Lahderanta

Symbiotic binaries are systems containing white dwarfs (WDs) and red giants. Symbiotic novae are those systems in which thermonuclear eruptions occur on the WD components. These are to be distinguished from events driven by accretion disk…

太阳与恒星天体物理 · 物理学 2018-03-14 S. Starrfield , F. X. Timmes , C. Iliadis , W. R. Hix , W. D. Arnett , C. Meakin , W. M. Sparks

We investigate the Joule expansion of an interacting quantum gas in an energy eigenstate. The Joule expansion occurs when two subsystems of different particle density are allowed to exchange particles. We demonstrate numerically that the…

统计力学 · 物理学 2019-08-07 Jae Dong Noh , Eiki Iyoda , Takahiro Sagawa

We report the first observation of re-entrant layer-by-layer etching based on {\it in situ\/} reflection high-energy electron-diffraction measurements. With AsBr$_3$ used to etch GaAs(001), sustained specular-beam intensity oscillations are…

凝聚态物理 · 物理学 2016-08-31 T. Kaneko , P. Šmilauer , B. A. Joyce , T. Kawamura , D. D. Vvedensky