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Excitonic Eigenstates of Disordered Semiconductor Quantum Wires:Adaptive Wavelet Computation of Eigenvalues for the Electron-Hole Schrodinger Equation

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Communications in Computational Physics 2013年第6期14卷 21-47页

作者： Christian Mollet Angela Kunoth torsten meier Institut fur Mathematik Universitat PaderbornWarburger Str.100D-33098 PaderbornGermany Department Physik Universitat PaderbornWarburger Str.100D-33098 PaderbornGermany

A novel adaptive approach to compute the eigenenergies and eigenfunctions of the two-particle(electron-hole)Schrodinger equation including Coulomb attraction is *** an example,we analyze the energetically lowest exciton state of a thin one-dimensional semiconductor quantum wire in the presence of disorder which arises from the non-smooth interface between the wire and surrounding *** eigenvalues of the corresponding Schrodinger equation,i.e.,the onedimensional exciton Wannier equation with disorder,correspond to the energies of excitons in the quantum *** wavefunctions,in turn,provide information on the optical properties of the *** reformulate the problem of two interacting particles that both can move in one dimension as a stationary eigenvalue problem with two spacial dimensions in an appropriate weak form whose bilinear form is arranged to be symmetric,continuous,and *** disorder of the wire is modelled by adding a potential in the Hamiltonian which is generated by normally distributed random *** numerical solution of this problem is based on adaptive *** scheme allows for a convergence proof of the resulting scheme together with complexity *** examples demonstrate the behavior of the smallest eigenvalue,the ground state energies of the exciton,together with the eigenstates depending on the strength and spatial correlation of disorder.

关键词： Semiconductor quantum wire disorder Schrodinger equation eigenvalue problem weak formulation bounded and coercive bilinear form adaptive wavelet method convergence complexity ground state energies exciton

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Neighboring Atom Collisions in Solid-State High Harmonic Generation

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Ultrafast Science 2021年第1期1卷 23-30页

作者： Ruixin Zuo Alexander Trautmann Guifang Wang Wolf-Rüdiger Hannes Shidong Yang Xiaohong Song torsten meier Marcelo Ciappina Huynh Thanh Duc Weifeng Yang Research Center for Advanced Optics and Photoelectronics Department of PhysicsCollege of ScienceShantou UniversityShantouGuangdong 515063China Institute of Mathematics Shantou UniversityShantouGuangdong 515063China Department of Physics and Center for Optoelectronics and Photonics Paderborn(CeOPP) University of PaderbornWarburger Str.100D-33098 PaderbornGermany Key Laboratory of Intelligent Manufacturing Technology of MOE Shantou UniversityShantouGuangdong 515063China Physics Program Guangdong Technion-Israel Institute of TechnologyShantouGuangdong 515063China Technion-Israel Institute of Technology Haifa 32000Israel Ho Chi Minh City Institute of Physics Vietnam Academy of Science and Technology1 Mac Dinh ChiDistrict 1Ho Chi Minh CityVietnam

High harmonic generation(HHG)from solids shows great application prospects in compact short-wavelength light sources and as a tool for imaging the dynamics in crystals with subnanometer spatial and attosecond temporal ***,the underlying collision dynamics behind solid HHG is still intensively debated and no direct mapping relationship between the collision dynamics with band structure has been ***,we show that the electron and its associated hole can be elastically scattered by neighboring atoms when their wavelength approaches the atomic *** reveal that the elastic scattering of electron/hole from neighboring atoms can dramatically influence the electron recombination with its left-behind hole,which turns out to be the fundamental reason for the anisotropic interband HHG observed recently in bulk *** findings link the electron/hole backward scattering with Van Hove singularities and forward scattering with critical lines in the band structure and thus build a clear mapping between the band structure and the harmonic *** work provides a unifying picture for several seemingly unrelated experimental observations and theoretical predictions,including the anisotropic harmonic emission in MgO,the atomic-like recollision mechanism of solid HHG,and the delocalization of HHG in *** strongly improved understanding will pave the way for controlling the solid-state HHG and visualizing the structure-dependent electron dynamics in solids.

关键词： spectrum harmonic collision

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柏林Zentra酒吧

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现代装饰 2016年第1期 90-95页

作者： Bjrn meier Ingo Strobel Jan Maley Sebastian Drken 姜敏华 HIDDEN FORTRESS

项目地址德国项目面积120m^2竣工时间2016.08设计单位HIDDEN FORTRESS本案位于德国柏林西部的老城区,是一家由Sebastian Mathow和torsten Bender经营的鸡尾酒吧,由柏林当地Hidden Fortress设计团队担纲其室内设计。初见它,仿佛能令人一... 详细信息

项目地址德国项目面积120m^2竣工时间2016.08设计单位HIDDEN FORTRESS本案位于德国柏林西部的老城区,是一家由Sebastian Mathow和torsten Bender经营的鸡尾酒吧,由柏林当地Hidden Fortress设计团队担纲其室内设计。初见它,仿佛能令人一下回忆起经典的美式酒吧,砖砌的拱形天花、长条形的吧台从北至南贯穿整个空间。再细看,似乎又能发现许多让人惊喜的细节。

关键词： Zentra 项目地址设计单位室内设计激光雕刻 Bender 北至项目面积竣工时间欧普艺术

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