Zobrazeno 1 - 10
of 188
pro vyhledávání: '"Morandi, O."'
Publikováno v:
Phys. Rev. B 104, 155435 (2021)
We study the effect of electron spill-out and of nonlocality on the propagation of light inside a gap between two semi-infinite metallic regions. We compare the predictions of a local response model taking into account only the spill-out, to the pred
Externí odkaz:
http://arxiv.org/abs/2107.07210
Autor:
Morandi, O.
Publikováno v:
Commun. Comput. Phys., 26 (2019), pp. 681-699
We develop a numerical model that reproduces the thermal equilibrium and the spin transfer mechanisms in magnetic nanomaterials. We analyze the coherent two-particle spin exchange interaction and the electron-electron collisions. Our study is based o
Externí odkaz:
http://arxiv.org/abs/1802.00663
Autor:
Morandi, O.
A quantum model based on a Euler-Lagrange variational approach is proposed. In analogy with the classical transport, our approach maintain the description of the particle motion in terms of trajectories in a configuration space. Our method is designe
Externí odkaz:
http://arxiv.org/abs/1711.08915
Akademický článek
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Akademický článek
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Autor:
Morandi, O.
The phenomenological Landau theory of the spin precession has been used to reproduce the out-of-equilibrium properties of many magnetic systems. However, such an approach suffers from some serious limitations. The main reason is that the spin and the
Externí odkaz:
http://arxiv.org/abs/1606.05368
Autor:
Morandi, O., Hervieux, P. -A.
We study of the ultrafast dynamics of the atomic angular momentum in ferrimagnets irradiated by laser pulses. My apply a quantum atomistic spin approach based on the Monte Carlo technique. Our model describes the coherent transfer of angular momentum
Externí odkaz:
http://arxiv.org/abs/1602.07950
The production of a Bose-Einstein condensate made of positronium may be feasible in the near future. Below the condensation temperature, the positronium collision process is modified by the presence of the condensate. This makes the theoretical descr
Externí odkaz:
http://arxiv.org/abs/1602.05910
Autor:
Morandi, O., Schuerrer, F.
The single graphene layer is a novel material consisting of a flat monolayer of carbon atoms packed in a two-dimensional honeycomb-lattice, in which the electron dynamics is governed by the Dirac equation. A pseudo-spin phase-space approach based on
Externí odkaz:
http://arxiv.org/abs/1102.2416
We present a dynamical model that successfully explains the observed time evolution of the magnetization in diluted magnetic semiconductor quantum wells after weak laser excitation. Based on the pseudo-fermion formalism and a second order many-partic
Externí odkaz:
http://arxiv.org/abs/0901.4541