Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Jullien, Rémi"'
Autor:
Dyakonov, Michel, Jullien, Remi
By numerical simulation, we study the classical magnetoresistance of two-dimensional electrons in the presence of weak short range scattering. A critical magnetic field defines the percolation threshold, above which the longitudinal resistance vanish
Externí odkaz:
http://arxiv.org/abs/cond-mat/0605732
The classical correction to the velocity auto-correlation function of non-interacting particles due to memory effects, which are beyond the Boltzmann equation, is calculated both analytically and numerically for the case of isotropic scattering in tw
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411672
We have studied the diffusion inside the silica network of sodium atoms initially located outside the surfaces of an amorphous silica film. We have focused our attention on structural and dynamical quantities, and we have found that the local environ
Externí odkaz:
http://arxiv.org/abs/cond-mat/0312279
Publikováno v:
Physical Review Letters, 90, 170602, 2003
The magnetoresistance of classical two-dimensional electrons scattered by randomly distributed impurities is investigated by numerical simulation. At low magnetic fields, we find for the first time a negative magnetoresistance proportional to |B|. Th
Externí odkaz:
http://arxiv.org/abs/cond-mat/0212178
We study the structural and dynamical characteristics of the sodium atoms inside and outside the ``diffusion channels'' in glassy Na$_2$O-4SiO$_2$ (NS4) using classical molecular dynamics. We show that on average neither energetic arguments nor local
Externí odkaz:
http://arxiv.org/abs/cond-mat/0202052
Publikováno v:
Phys. Rev. B, vol 64, p. 214206 (2001)
The structure and the electronic properties of a sodium tetrasilicate (Na${}_2$Si${}_4$O${}_9$) glass were studied by combined Car-Parrinello and classical molecular-dynamics simulations. The glass sample was prepared using a method employed recently
Externí odkaz:
http://arxiv.org/abs/cond-mat/0109263
Publikováno v:
Phys. Rev. B 64, 134303 (2001)
We use classical molecular dynamics simulations to study the dynamics of sodium atoms in amorphous Na$_2$O-4SiO$_2$. We find that the sodium trajectories form a well connected network of pockets and channels. Inside these channels the motion of the a
Externí odkaz:
http://arxiv.org/abs/cond-mat/0101055
Stretched exponential relaxation ($\exp{-(t/\tau)}^{\beta_K}$) is observed in a large variety of systems but has not been explained so far. Studying random walks on percolation clusters in curved spaces whose dimensions range from 2 to 7, we show tha
Externí odkaz:
http://arxiv.org/abs/cond-mat/0011494
Autor:
Jund, Philippe, Jullien, Remi
The multidimensional topography of the collective potential energy function of a so-called strong glass former (silica) is analyzed by means of classical molecular dynamics calculations. Features qualitatively similar to those of fragile glasses are
Externí odkaz:
http://arxiv.org/abs/cond-mat/9907455
Autor:
Jund, Philippe, Jullien, Remi
We use extensive classical molecular dynamics simulations to calculate the thermal conductivity of a model silica glass. Apart from the potential parameters, this is done with no other adjustable quantity and the standard equations of heat transport
Externí odkaz:
http://arxiv.org/abs/cond-mat/9903033