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相关论文: Insight into the Li$_2$CO$_3$-K$_2$CO$_3$ eutectic…

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The static and dynamic structure of liquid Al is studied using the orbital free ab-initio molecular dynamics method. Two thermodynamic states along the coexistence line are considered, namely T = 943 K and 1323 K for which X-ray and neutron…

无序系统与神经网络 · 物理学 2009-11-07 David J. Gonzalez , Luis Enrique Gonzalez , Jose Manuel Lopez , Malcolm J. Stott

We present molecular dynamics simulations of the SPC/E model of water to probe the dynamic properties at temperatures from 350 K down to 190 K and pressures from 2.5GPa (25kbar) down to -300MPa (-3kbar). We compare our results with those…

凝聚态物理 · 物理学 2009-10-31 Francis W. Starr , Francesco Sciortino , H. Eugene Stanley

Using a large scale molecular dynamics computer simulation we investigate the dynamics of a supercooled melt of SiO_2. We find that with increasing temperature the temperature dependence of the diffusion constants crosses over from an…

统计力学 · 物理学 2009-10-31 Walter Kob , Jurgen Horbach , Kurt Binder

Mixed-quantum classical (MQC) methods for simulating the dynamics of molecules at metal surfaces have the potential to accurately and efficiently provide mechanistic insight into reactive processes. Here, we introduce simple two-dimensional…

化学物理 · 物理学 2023-08-02 James Gardner , Scott Habershon , Reinhard J. Maurer

We have investigated thermodynamic and dynamic properties as well as the dielectric constant of water-metha\-nol model mixtures in the entire range of composition by using constant pressure molecular dynamics simulations at ambient…

软凝聚态物质 · 物理学 2015-12-25 E. Galicia-Andrés , H. Dominguez , L. Pusztai , O. Pizio

The swept-field experiments on magnetic molecular solids such as \Fe8 are studied using Monte Carlo simulations. A kinetic equation is developed to understand the phenomenon. It is found that the simulations provide a quantitatively…

统计力学 · 物理学 2015-10-14 Erik Lenferink , Avinash Vijayaraghavan , Anupam Garg

We present a novel approach to investigate the long-time stochastic dynamics of multi-dimensional classical systems, in contact with a heat-bath. When the potential energy landscape is rugged, the kinetics displays a decoupling of short and…

软凝聚态物质 · 物理学 2013-05-29 O. Corradini , P. Faccioli , H. Orland

A kinetic approach for the evolution of ultracold neutral plasmas including interionic correlations and the treatment of ionization/excitation and recombination/deexcitation by rate equations is described in detail. To assess the…

原子物理 · 物理学 2009-11-10 T. Pohl , T. Pattard , J. M. Rost

We present a multi-lattice kinetic Monte Carlo (kMC) approach that efficiently describes the atomistic dynamics of morphological transitions between commensurate structures at crystal surfaces. As an example we study the reduction of a…

介观与纳米尺度物理 · 物理学 2015-01-09 Max J. Hoffmann , Matthias Scheffler , Karsten Reuter

[Abridged] We present a detailed study of the physical properties of the molecular gas in a sample of 18 molecular gas-rich early-type galaxies (ETGs) from the ATLAS$ 3D sample. Our goal is to better understand the star formation processes…

The electrocaloric effect (ECE) in BaTiO3 is simulated using two different first-principles based effective Hamiltonian molecular dynamics methods. The calculations are performed for a wide range of temperatures (30--900 K) and external…

材料科学 · 物理学 2013-11-12 Takeshi Nishimatsu , Jordan A. Barr , Scott P. Beckman

Molecular dynamics simulations using classical force fields were carried out to study energetic and structural properties of rotationally disordered clay mineral-water-CO2 systems at pressure and temperature relevant to geological carbon…

CO2 injection into a saline aquifer crossed by a tectonic fault is studied with coupled fluid mechanics - geomechanics modeling. The simulation approach is based on coupling of the MUFITS reservoir simulator and the FLAC3D mechanical…

Constant-pressure constant-temperature {\it ab initio} molecular dynamics simulations at high temperatures have been used to study MgSiO$_3$ liquid, the major constituent of the Earth's lower mantle to conditions of the Earth's core-mantle…

地球物理 · 物理学 2007-05-23 Jones T. K. Wan , Thomas S. Duffy , Sandro Scandolo , Roberto Car

Using molecular dynamics simulations and integral equations (Rogers-Young, Percus-Yevick and hypernetted chain closures) we investigate the thermodynamic of particles interacting with continuous core-softened intermolecular potential.…

软凝聚态物质 · 物理学 2007-05-23 Alan B. de Oliveira , Paulo A. Netz , Thiago Colla , Marcia C. Barbosa

The low-temperature (up to about 100K) collisional (de)excitation cross sections are computed using the full coupled-channel (CC) quantum dynamics for both Li$_2$ and Li$_2^+$ molecular targets in collision with $^4$He. The interaction…

化学物理 · 物理学 2007-07-13 M. Wernli. E. Bodo , F. A. Gianturco

We have performed first-principles molecular-dynamics simulations based on density-functional theory to study the thermophysical properties of ethane under extreme conditions. We present new results for the equation of state of fluid ethane…

材料科学 · 物理学 2012-12-12 Yujuan Zhang , Cong Wang , Fawei Zheng , Ping Zhang

The molecular dynamics (MD) simulation study of solvation structure and free energetics in 1-ethyl-3-methylimidazolium chloride and 1-ethyl-3-methylimidazolium hexafluorophosphate using a probe solute in the preceding article [Y. Shim, M.…

软凝聚态物质 · 物理学 2009-11-11 Y. Shim , M. Y. Choi , H. J. Kim

We derive a Debye-H\"uckel-like model of the electric ion-ion interaction for non-constant dielectric susceptibility, which does not depend on any kind of charging process due to its foundation in the general framework of non-equilibrium…

化学物理 · 物理学 2025-02-24 Wolfgang Dreyer , Rüdiger Müller

We have performed an inelastic neutron scattering study of the low energy spin dynamics of the heavy fermion compound Ce0.8La0.2Al3 as a function of temperature and external pressure up to 5 kbar. At temperatures below 3 K, the magnetic…

强关联电子 · 物理学 2009-10-31 Eugene Goremychkin , Ray Osborn , Brian Rainford , Amir Murani