Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Saarikoski H"'
Publikováno v:
Phys. Rev. Lett. 123, 266804 (2019)
We identify a series of topological transitions occurring in electronic spin transport when manipulating spin-guiding fields controlled by the geometric shape of mesoscopic interferometers. They manifest as distinct inversions of the interference pat
Externí odkaz:
http://arxiv.org/abs/1908.01825
Publikováno v:
Phys. Rev. B 96, 035312 (2017)
We propose a theoretical framework that captures the geometric vector potential emerging from the non-adiabatic spin dynamics of itinerant carriers subject to arbitrary magnetic textures. Our approach results in a series of constraints on the geometr
Externí odkaz:
http://arxiv.org/abs/1703.07100
Autor:
Reynoso, A. A., Baltanás, J. P., Saarikoski, H., Vázquez-Lozano, J. E., Nitta, J., Frustaglia, D.
Publikováno v:
New J. Phys. 19, 063010 (2017)
We study the dynamics of a localized spin-1/2 driven by a time-periodic magnetic field that undergoes a topological transition. Despite the strongly non-adiabatic effects dominating the spin dynamics, we find that the field's topology appears clearly
Externí odkaz:
http://arxiv.org/abs/1702.01781
Publikováno v:
Rev.Mod.Phys.82:2785,2010
The main theme of this review is the many-body physics of vortices in quantum droplets of bosons or fermions, in the limit of small particle numbers. Systems of interest include cold atoms in traps as well as electrons confined in quantum dots. When
Externí odkaz:
http://arxiv.org/abs/1006.1884
The rotation of a quantum liquid induces vortices to carry angular momentum. When the system is composed of multiple components that are distinguishable from each other, vortex cores in one component may be filled by particles of the other component,
Externí odkaz:
http://arxiv.org/abs/0812.3366
Publikováno v:
Phys. Rev. B 78, 195321 (2008)
When a gas of electrons is confined to two dimensions, application of a strong magnetic field may lead to startling phenomena such as emergence of electron pairing. According to a theory this manifests itself as appearance of the fractional quantum H
Externí odkaz:
http://arxiv.org/abs/0809.1020
Publikováno v:
Phys. Rev. B 77, 041302(R) (2008)
Two-dimensional semiconductor quantum dots are studied in the the filling-factor range 2
Externí odkaz:
http://arxiv.org/abs/0712.0991
Publikováno v:
Phys. Rev. B 75, 075313 (2007)
We investigate effects of spin-orbit splitting on electronic transport in a spin valve consisting of a large quantum dot defined on a two-dimensional electron gas with two ferromagnetic contacts. In the presence of both structure inversion asymmetry
Externí odkaz:
http://arxiv.org/abs/cond-mat/0610770
Emergence of half-integer filling factor states, such as nu=5/2 and 7/2, is found in quantum dots by using numerical many-electron methods. These states have interesting similarities and differences with their counterstates found in the two-dimension
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603166
Autor:
Torsti, T., Eirola, T., Enkovaara, J., Hakala, T., Havu, P., Havu, V., Höynälänmaa, T., Ignatius, J., Lyly, M., Makkonen, I., Rantala, T. T., Ruokolainen, J., Ruotsalainen, K., Räsänen, E., Saarikoski, H., Puska, M. J.
A characteristic feature of the state-of-the-art of real-space methods in electronic structure calculations is the diversity of the techniques used in the discretization of the relevant partial differential equations. In this context, the main approa
Externí odkaz:
http://arxiv.org/abs/cond-mat/0601201