Zobrazeno 1 - 10
of 1 053
pro vyhledávání: '"MARTINEK, J."'
Publikováno v:
Phys. Rev. Lett. 105, 266805 (2010)
We present a novel statistical method for the study of stable atomic configurations in breaking nanowires based on the 2D cross-correlation analysis of conductance versus electrode separation traces. Applying this method, we can clearly resolve the t
Externí odkaz:
http://arxiv.org/abs/1006.1811
Autor:
Sindel, M., Borda, L., Martinek, J., Bulla, R., Koenig, J., Schoen, G., Maekawa, S., von Delft, J.
Publikováno v:
Phys. Rev. B 76, 045321 (2007)
We systematically study the influence of ferromagnetic leads on the Kondo resonance in a quantum dot tuned to the local moment regime. We employ Wilson's numerical renormalization group method, extended to handle leads with a spin asymmetric density
Externí odkaz:
http://arxiv.org/abs/0706.3997
Autor:
Martinek, J., Sindel, M., Borda, L., Barnas, J., Bulla, R., König, J., Schön, G., Maekawa, S., von Delft, J.
Publikováno v:
Phys. Rev. B 72, 121302(R) (2005)
The effect of a gate voltage ($V_g$) on the spin-splitting of an electronic level in a quantum dot (QD) attached to ferromagnetic leads is studied in the Kondo regime using a generalized numerical renormalization group technique. We find that the $V_
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406323
Publikováno v:
Phys. Rev. Lett. 91, 247202 (2003)
The Kondo effect in quantum dots (QDs) - artificial magnetic impurities - attached to ferromagnetic leads is studied with the numerical renormalization group (NRG) method. It is shown that the QD level is spin-split due to presence of ferromagnetic e
Externí odkaz:
http://arxiv.org/abs/cond-mat/0304385
Publikováno v:
Phys. Rev. Lett. 91, 127203 (2003)
We study the Kondo effect in a quantum dot which is coupled to ferromagnetic leads and analyse its properties as a function of the spin polarization of the leads. Based on a scaling approach we predict that for parallel alignment of the magnetization
Externí odkaz:
http://arxiv.org/abs/cond-mat/0210006
In a recent paper Liang {\it et al.} [Nature {\bf 411}, 665 (2001)] showed experimentally, that metallic nanotubes, strongly coupled to external electrodes, may act as coherent molecular waveguides for electronic transport. The experimental results w
Externí odkaz:
http://arxiv.org/abs/cond-mat/0206142
Electron tunneling in ferromagnetic single-electron transistors is considered theoretically in the sequential tunneling regime. A new formalism is developed, which operates in a two-dimensional space of states, instead of one-dimensiona space used in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010256
Publikováno v:
Annalen der Physik (Leipzig) 8 Spec. Issue, SI-177 (1999)
Spin dependent single electron tunneling in a ferromagnetic double junction is investigated theoretically in the limit of incoherent sequential tunneling. The junction consists of a small nonmagnetic metallic grain with discrete energy levels, which
Externí odkaz:
http://arxiv.org/abs/cond-mat/9908196
Publikováno v:
Phys. Rev. B60, 12246 (1999)
Frequency dependent current noise in ferromagnetic double junctions with Coulomb blockade is studied theoretically in the limit of sequential tunneling. Two different relaxation processes are found in the correlations between spin polarized tunneling
Externí odkaz:
http://arxiv.org/abs/cond-mat/9904341
Spin dependent single electron tunneling in ferromagnetic double junctions is analysed theoretically in the limit of sequential tunneling. The influence of discrete energy spectrum of the central electrode (island)on the spin accumulation, spin fluct
Externí odkaz:
http://arxiv.org/abs/cond-mat/9810195