Zobrazeno 1 - 10
of 39
pro vyhledávání: '"Koller, Sonja"'
Autor:
Koller, Sonja.
Univ., Diss., 2009--Regensburg.
Externí odkaz:
http://nbn-resolving.de/urn:nbn:de:bvb:355-epub-136334
http://epub.uni-regensburg.de/13633
http://d-nb.info/1002574560/34
http://epub.uni-regensburg.de/13633
http://d-nb.info/1002574560/34
Autor:
Koller, Sonja
Zugl.: Regensburg, Univ., Diss., 2009
Externí odkaz:
http://d-nb.info/1000678377/04
A theoretical model of a single molecule coupled to many vibronic modes is presented. At low energies, transport is dominated by electron-vibron processes where transfer of an electron through the dot is accompanied by the excitation/emission of quan
Externí odkaz:
http://arxiv.org/abs/1108.0814
Publikováno v:
Phys. Rev. B 82, 235307 (2010)
Various theoretical methods address transport effects in quantum dots beyond single-electron tunneling while accounting for the strong interactions in such systems. In this paper we report a detailed comparison between three prominent approaches to q
Externí odkaz:
http://arxiv.org/abs/1008.0347
Publikováno v:
Phys. Rev. B 82, 045316 (2010)
We calculate the nonlinear cotunneling conductance through interacting quantum dot systems in the deep Coulomb blockade regime using a rate equation approach based on the T-matrix formalism, which shows in the concerned regions very good agreement wi
Externí odkaz:
http://arxiv.org/abs/1003.5834
Publikováno v:
New Journal of Physics 12 (2010) 033038
We investigate spin effects in transport across fully interacting, finite size graphene armchair nanoribbons (ACNs) contacted to collinearly spin-polarized leads. In such systems, the presence of short ranged Coulomb interaction between bulk states a
Externí odkaz:
http://arxiv.org/abs/0910.5265
Publikováno v:
Phys. Rev. B 80, 035412 (2009)
We investigate linear and nonlinear transport across single-walled carbon nanotube quantum dots weakly coupled to spin-polarized leads. We consider tubes of finite length and small diameter, where not only forward scattering contributions of the Coul
Externí odkaz:
http://arxiv.org/abs/0903.3606
Publikováno v:
Europhys. Lett. 88, 57001 (2009)
We present a microscopic theory for interacting graphene armchair nanoribbon quantum dots. Long range interaction processes are responsible for Coulomb blockade and spin-charge separation. Short range ones, arising from the underlying honeycomb latti
Externí odkaz:
http://arxiv.org/abs/0903.3590
Publikováno v:
Phys. Rev. B 77, 245313 (2008)
We investigate linear and non-linear transport in a double quantum dot system weakly coupled to spin-polarized leads. In the linear regime, the conductance as well as the non-equilibrium spin accumulation are evaluated in analytic form. The conductan
Externí odkaz:
http://arxiv.org/abs/0712.0757
Publikováno v:
New Journal of Physics 9 (2007) 348
We investigate linear and nonlinear transport in interacting single wall carbon nanotubes (SWCNTs) that are weakly attached to ferromagnetic leads. For the reduced density matrix of a SWCNT quantum dot, equations of motion which account for an arbitr
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703756