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相关论文: Non proportionality dependence on shaping time

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We present a theoretical study of the interaction between an atom characterized by a degenerate ground state and a reciprocal environment, such as a semiconductor nanoparticle, without the presence of external bias. Our analysis reveals…

量子物理 · 物理学 2024-03-22 Mário G. Silveirinha , Hugo Terças , Mauro Antezza

A general method for solving numerically the time-dependent Schr\"odinger equation, that is based on the Suzuki-Trotter scheme with the split-step Fourier approach, is introduced. The method relies on a Hamiltonian decomposition, where…

原子物理 · 物理学 2022-11-29 M. C. Suster , J. Derlikiewicz , K. Krajewska , F. Cajiao Vélez , J. Z. Kamiński

Here, we investigate how crystal symmetry tailors the non-Hermitian electro-optic effect arising from the Berry curvature dipole. Specifically, we demonstrate the critical influence of the material's point group symmetry and external…

介观与纳米尺度物理 · 物理学 2025-03-21 Sylvain Lannebère , Tatiana G. Rappoport , Tiago A. Morgado , Ivo Souza , Mário G. Silveirinha

Anisotropic fluids, such as nematic liquid crystals, can form non-spherical equilibrium shapes known as tactoids. Predicting the shape of these structures as a function of material parameters is challenging and paradigmatic of a broader…

数值分析 · 数学 2025-02-04 James H. Adler , Anca S. Andrei , Timothy J. Atherton

A chiral-order parameter of spins in a crystal can not be inferred from measurements of Bragg reflections, although there are several claims in published literature to the contrary. Appropriate techniques use total scattering, of x-rays or…

强关联电子 · 物理学 2009-09-15 Stephen W. Lovesey

We study the role of time reversal symmetry (TRS) in the circular photogalvanic (CPG) responses considering chiral Weyl semimetal (WSM) while a quantized CPG response is guaranteed by broken of both inversion symmetry (IS) and mirror…

介观与纳米尺度物理 · 物理学 2021-04-29 Banasree Sadhukhan , Tanay Nag

Diffusion of electrons in a two-dimensional system with time-dependent random potentials is investigated numerically. In the absence of spin-orbit scattering, the conductivity shows universal weak localization correction. In the presence of…

介观与纳米尺度物理 · 物理学 2009-10-30 Takeshi Nakanishi , Tomi Ohtsuki

The scattering formulation of characteristic mode decomposition is utilized to extend modal analysis to lossless scatterers breaking time-reversal symmetry. This enables characteristic modes analysis on devices containing gyrotropic or…

Spin-orbit coupling (SOC), the core of numerous condensed-matter phenomena such as nontrivial band gap, magnetocrystalline anisotropy, etc, is generally considered to be appreciable only in heavy elements, detrimental to the synthetization…

材料科学 · 物理学 2022-02-21 Jiayu Li , Qiushi Yao , Lin Wu , Zongxiang Hu , Boya Gao , Xiangang Wan , Qihang Liu

Diffraction images with continuous rotation symmetry arise from amorphous systems, but also from regular crystals when investigated by powder diffraction. On the theoretical side, pinwheel patterns and their higher dimensional…

谱理论 · 数学 2007-05-23 Michael Baake , Dirk Frettlöh , Uwe Grimm

Based on Document (1), by considering the retarded interaction of radiation fields, the third order transition probabilities of stimulated radiations and absorptions of light are calculated. The revised formulas of nonlinear polarizations…

综合物理 · 物理学 2008-04-22 Mei Xiaochun

Nonreciprocity in space-time modulated photonic crystals has been investigated in the context of nonreciprocal propagation and polarization. Here, we investigate a reconfigurable nonreciprocal wave growth in space-time modulated crystals.…

应用物理 · 物理学 2023-11-07 Mohamed F. Hagag , Thomas R. Jones , Karim Seddik , Dimitrios Peroulis

As liquid xenon TPCs increase in target mass while pursuing the direct detection of WIMP dark matter, the technical challenges arising due to their size call for new solutions and open the discussion on alternative detector concepts.…

仪器与探测器 · 物理学 2022-04-14 Fabian Kuger , Julia Dierle , Horst Fischer , Marc Schumann , Francesco Toschi

A pulsar's scintillation bandwidth is inversely proportional to the scattering delay, making accurate measurements of scintillation bandwidth critical to characterize unmitigated delays in efforts to measure low-frequency gravitational…

We discuss the concepts and methodology to implement an experiment probing directly Time Reversal (T) non-invariance, without any experimental connection to CP violation, by the exchange of "in" and "out" states. The idea relies on the…

高能物理 - 唯象学 · 物理学 2012-12-05 J. Bernabeu , F. Martinez-Vidal , P. Villanueva-Perez

The processes of radiation defects formation and evolution have been simulated in cubic dielectric crystals by the computational method of cellular automata. If suppose that the defects concentration as a parameter, which characterizes a…

元胞自动机与格子气 · 物理学 2011-05-03 K. Baktybekov , Ye. Vertyagina

We introduce the construction of a orthogonal wavepacket basis set, using the concept of stroboscopic time propagation, tailored to the efficient description of non-equilibrium extended electronic systems. Thanks to three desirable…

材料科学 · 物理学 2008-08-08 P. Bokes , F. Corsetti , R. W. Godby

In the present work, a new time-dependent exchange theory is presented wherein the symmetry constraints, on a multi-electron wavefunction, are properly accounted for. In so doing, the equations of motion, incorporating the required…

计算物理 · 物理学 2007-05-23 Charles A. Weatherford

In this study, we investigate the spin texture of the hourglass fermions band network in BiInO$_3$ using density functional theory (DFT) and symmetry analysis. Hourglass fermions are of interest in spintronics due to their unique and robust…

材料科学 · 物理学 2025-06-27 Ramsamoj Kewat , Nirmal Ganguli

The nonproportional scintillation response of LaBr3 doped with 5% Ce3+ and of LaCl3 doped with 10% Ce3+ was measured using highly monochromatic synchrotron irradiation. To estimate the photon response, pulse height spectra at many finely…

材料科学 · 物理学 2011-03-18 Ivan V. Khodyuk , Pieter Dorenbos