Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Hurst, Jérôme"'
Quantum fluid (or hydrodynamic) models provide an attractive alternative for the modeling and simulation of the electron dynamics in nano-scale objects. Compared to more standard approaches, such as density functional theory or phase-space methods ba
Externí odkaz:
http://arxiv.org/abs/2110.05252
Autor:
Hurst, Jérôme, De Riz, Arnaud, Staňo, Toussaint, Jean-Christophe, Fruchart, Olivier, Gusakova, Daria
Publikováno v:
Phys. Rev. B 103, 024434 (2021)
We report a theoretical overview of the magnetic domain wall behavior under an electric current in infinitely-long nanotubes with azimuthal magnetization, combining the $1$D analytic model and micromagnetic simulations. We highlight effects that, bes
Externí odkaz:
http://arxiv.org/abs/2010.01966
Autor:
Rowan-Robinson, Richard M., Hurst, Jérome, Ciuciulkaite, Agne, Chioar, Ioan-Augustin, Pohlit, Merlin, Zapata, Mario, Vavassori, Paolo, Dmitriev, Alexandre, Oppeneer, Peter M., Kapaklis, Vassilios
Publikováno v:
Advanced Photonics Research 2, 2100119 (2021)
Nanometer-thin rare-earth-transition metal (RE-TM) alloys with precisely controlled compositions and out-of-plane magnetic anisotropy are currently in the focus for ultrafast magnetophotonic applications. However, achieving lateral nanoscale dimensio
Externí odkaz:
http://arxiv.org/abs/2005.14478
Conduction electrons in metallic nano-objects ($\rm 1\,nm = 10^{-9}\, m$) behave as mobile negative charges confined by a fixed positively-charged background, the atomic ions. In many respects, this electron gas displays typical plasma properties suc
Externí odkaz:
http://arxiv.org/abs/1906.08165
Autor:
Granitzka, Patrick W., Reid, Alexander H., Hurst, Jerome, Jal, Emmanuelle, Guyader, Loïc Le, Liu, Tian-Min, Salemi, Leandro, Higley, Daniel J., Chase, Tyler, Chen, Zhao, Berritta, Marco, Schlotter, William F., Ohldag, Hendrik, Dakovski, Georgi L., Carron, Sebastian, Hoffmann, Matthias C., Wang, Jian, Mehta, Virat, Hellwig, Olav, Fullerton, Eric E., Takahashi, Yukiko K., Stöhr, Joachim, Oppeneer, Peter M., Dürr, Hermann A.
Time-resolved coherent X-ray diffraction is used to measure the spatially resolved magnetization structure within FePt nanoparticles during laser-induced ultrafast demagnetization. The momentum-dependent X-ray magnetic diffraction shows that demagnet
Externí odkaz:
http://arxiv.org/abs/1903.08287
Publikováno v:
Phys. Rev. B 98, 134439 (2018)
We theoretically investigate the creation of a magnetic moment in gold nanoparticles by circularly polarized laser light. To this end, we describe the collective electron dynamics in gold nanoparticles using a semiclassical approach based on a quantu
Externí odkaz:
http://arxiv.org/abs/1810.02097
Publikováno v:
SPIE Proceedings Volume 10732, Spintronics XI; 107322V (2018)
Spin currents have been shown to play a key role in the ultrafast laser-driven demagnetization process in ferromagnetic thin films. Here, we show that an oscillating spin current can be generated in the film via the application of a femtosecond laser
Externí odkaz:
http://arxiv.org/abs/1807.10946
Publikováno v:
Phys. Rev. A 98, 043430 (2018)
We propose and illustrate a quantum hydrodynamic (QHD) model for the description of plasmonic oscillations in the $\rm C_{60}$ molecule. Although simpler than competing approaches such as time-dependent density functional theory (TDDFT), the model co
Externí odkaz:
http://arxiv.org/abs/1806.05564
Using the phase-space formulation of quantum mechanics, we derive a four-component Wigner equation for a system composed of spin-1/2 fermions (typically, electrons) including the Zeeman effect and the spin-orbit coupling. This Wigner equation is coup
Externí odkaz:
http://arxiv.org/abs/1609.09472
Autor:
Hurst, Jerome, Leveque-Simon, Kevin, Hervieux, Paul-Antoine, Manfredi, Giovanni, Haas, Fernando
Publikováno v:
Phys. Rev. B 93, 205402 (2016)
An effective self-consistent model is derived and used to study the dynamics of an electron gas confined in a nonparabolic and anisotropic quantum well. This approach is based on the equations of quantum hydrodynamics, which incorporate quantum and n
Externí odkaz:
http://arxiv.org/abs/1603.02124