搜索结果: 1-15 共查到“物理学 relaxation”相关记录35条 . 查询时间(0.064 秒)
Continuum approach to self-similarity and scaling in morphological relaxation of a crystal with a facet
Continuum approach self-similarity and scaling morphological relaxation crystal with a facet
2015/10/16
The morphological relaxation of axisymmetric crystal surfaces with a single facet below the roughening transition temperature is studied analytically for diffusion-limited sDLd and attachment-detachme...
CONTINUUM RELAXATION OF INTERACTING STEPS ON CRYSTAL SURFACES IN 2+1 DIMENSIONS
crystal surface epitaxial growth morphological evolution Burton–Cabrera–Frank model Ehrlich–Schwoebel barrier entropic interactions elastic dipole interactions step chemical potential continuum limit surface mobility
2015/10/16
We study the relaxation of crystal surfaces in 2+1 dimensions via the motion ofinteracting atomic steps. The goal is the rigorous derivation of the continuum limit. The starting point is a discrete sc...
Unified continuum approach to crystal surface morphological relaxation
Unified continuum approach crystal surface morphological relaxation
2015/10/16
A continuum theory is used to predict scaling laws for the morphological relaxation of crystal surfaces in two independent space dimensions. Our goal is to unify previously disconnected experimental o...
Anisotropic diffusion in continuum relaxation of stepped crystal surfaces
Anisotropic diffusion continuum relaxation stepped crystal surfaces
2015/10/16
We study the continuum limit in 2+1 dimensions of nanoscale anisotropic diffusion processes on crystal surfaces relaxing to become flat below roughening. Our main result is a continuum law for the sur...
ELECTROMIGRATION IN MACROSCOPIC RELAXATION OF STEPPED SURFACES
epitaxial relaxation crystal facet Burton–Cabrera–Frank model electromigration desorption surface diffusion step chemical potential macroscopic limit variational principle
2015/10/16
We study the effect of an external electric field E on macroscopic relaxation laws for crystal surfaces in 2 + 1 dimensions. We derive a nonlinear, fourth-order partial differential equation (PDE) for...
Role of chemical potential in relaxation of faceted crystal structure
chemical potential relaxation faceted crystal structure
2015/10/16
Below the roughening transition, crystal surfaces have macroscopic plateaus, facets, whose evolution is driven by the microscale dynamics of steps. A long-standing puzzle was how to reconcile discrete...
New evidence for zero-temperature relaxation in a spin-polarized Fermi liquid
The experiment report parameters and coefficients
2014/12/20
Spin-echo experiments are reported for 3He-4He solutions under extremely high B/T conditions, B=14.75 T and T≥1.73 mK. The 3He concentration x3 was adjusted close to the valu...
Relaxation of pinned domains in patterned magnetic thin films
Magnetic pinning E-beam lithography Domain expansion Domain wall motion
2011/11/30
We have shown in previous papers that the magnetic domains could be pinned inside the arti"cially patterned hole arrays under suitable geometry aspect ratio. Nevertheless, we have found that if we rev...
Relaxation time ansatz and shear and bulk viscosities of gluon matter
Relaxation time ansatz shear bulk viscosities
2011/7/20
Shear and bulk viscosity-to-entropy density ratios are calculated for the pure gluon matter in a non-equilibrium mean-field quasiparticle approach within the relaxation time approximation. We study ho...
Kinetic Activation Relaxation Technique
Kinetic Activation Relaxation Technique Computational Physics
2011/8/4
Abstract: We present a detailed description of the kinetic Activation-Relaxation Technique (k-ART), an off-lattice, self-learning kinetic Monte Carlo algorithm with on-the-fly event search. Combining ...
Relaxation of ideal classical particles in a one-dimensional box
Relaxation, classical mechanics, ideal gas law
2011/9/6
We study the deterministic dynamics of non-interacting classical gas particles confined to a one-dimensional box as a pedagogical toy model for the relaxation of the Boltzmann distribution towards equ...
Magnetocardiography with a modular spin-exchange relaxation free atomic magnetometer array
Instrumentation and measurement, Atomic and molecular physics, Medical physics, Biological physics
2011/9/6
We present a portable four-channel atomic magnetometer array operating in the spin exchange relaxation-free regime. The magnetometer array has several design
features intended to maximize its suitabi...
Models based on Mittag-Leffler functions for anomalous relaxation in dielectrics
Mittag-Leer Functions Complete Monotonicity Laplace Transform Fractional Di erential Equations
2011/7/27
Models based on Mittag-Leffler functions for anomalous relaxation in dielectrics.
Coulomb interaction in graphene: Relaxation rates and transport
Coulomb interaction in graphene Relaxation rates transport
2010/11/25
We analyze the inelastic electron-electron scattering in undoped graphene within the Keldysh
diagrammatic approach. We demonstrate that finite temperature strongly affects the screening
properties o...
Atomistic theory of spin relaxation in self-assembled In$_{1-x}$Ga$_x$As/GaAs quantum dots at zero magnetic field
Atomistic theory spin relaxation zero magnetic field
2010/11/25
We present full atomistic calculations of the spin-flip time (T1) of electrons and holes mediated by acoustic phonons in self-assembled In1−xGaxAs/GaAs quantum dots at zero magnetic field. At lo...