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43 papers · 2 filters
First principles study of Si(335)-Au surface
Mariusz Krawiec
The structural and electronic properties of gold decorated Si(335) surface are studied by means of density-functional calculations. The resulting structural model indicates that th…
STM tunneling through a quantum wire with a side-attached impurity
T. Kwapinski, M. Krawiec, M. Jalochowski
The STM tunneling through a quantum wire (QW) with a side-attached impurity (atom, island) is investigated using a tight-binding model and the nonequilibrium Keldysh Green function…
Compensation of the Kondo effect in quantum dots coupled to ferromagnetic leads within equation of motion approach
Mariusz Krawiec
We propose a new approximation scheme within equation of motion approach (EOM) to spin polarized transport through a quantum dot coupled to ferromagnetic leads. It has some advanta…
Chirality tunneling and quantum dynamics for domain walls in mesoscopic ferromagnets
E. G. Galkina, B. A. Ivanov, Sergey Savel'ev +1
We studied the quantum dynamics of ferromagnetic domain walls (topological kink-type solitons) in one dimensional ferromagnetic spin chains. We show that the tunneling probability…
Hybrid-impurity resonances in anisotropic quantum dots
V. A. Margulis, A. V. Shorokhov
The absorption of electromagnetic radiation of an anisotropic quantum dot is theoretically investigated taking into account the processes associated with simultaneous scattering fr…
Zitterbewegung of electrons in graphene in a magnetic field
Tomasz M. Rusin, Wlodek Zawadzki
Electric current and spacial displacement due to trembling motion [Zitterbewegung (ZB)] of electrons in graphene in the presence of an external magnetic field are described. Contri…