Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Stepanyuk, V. S."'
Publikováno v:
Physics Letters A, Volume 378, Issue 48, 14 November 2014, Pages 3642-3644
Our first-principles study has revealed unexpected spin polarization of the Pd(001) substrate in contact with antiferromagnetic CoO overlayers. We give an evidence that the ferromagnetism of Pd is caused by the zigzag positions of Co atoms with respe
Externí odkaz:
http://arxiv.org/abs/1502.05208
Publikováno v:
J. Phys. Chem. C,(2015)
Both quantum and classical behavior of single atomic spins on surfaces is determined by the local anisotropy of adatoms and their coupling to the immediate electronic environment. Yet adatoms seldom reside on surfaces alone and it is generally acknow
Externí odkaz:
http://arxiv.org/abs/1502.03743
Autor:
Smirnov, A. S., Negulyaev, N. N., Niebergall, L., Hergert, W., Saletsky, A. M., Stepanyuk, V. S.
Ab initio calculations and kinetic Monte Carlo simulations demonstrate that the quantum confinement of surface electrons to nanoislands can significantly affect the growth process at low temperatures. Formation of empty zones and orbits of an adatom
Externí odkaz:
http://arxiv.org/abs/0805.2281
Autor:
Tao, Kun, Stepanyuk, V. S., Bruno, P., Bazhanov, D. I., Maslyuk, V. V., Brandbyge, M., Mertig, I.
The state of the art ab initio calculations reveal the effect of a scanning tunnelling microscopy tip on magnetic properties and conductance of a benzene-adatom sandwich on Cu(001). We concentrate on a benzene-Co system interacting with a Cr tip. Our
Externí odkaz:
http://arxiv.org/abs/0804.3337
We present a novel approach to spin manipulation in atomic-scale nanostructures. Our ab initio calculations clearly demonstrate that it is possible to tune magnetic properties of sub-nanometer structures by adjusting the geometry of the system. By th
Externí odkaz:
http://arxiv.org/abs/0804.3298
Autor:
Rastei, M. V., Heinrich, B., Limot, L., Ignatiev, P. A., Stepanyuk, V. S., Bruno, P., Bucher, J. P.
Low-temperature scanning tunneling spectroscopy over Co nanoislands on Cu(111) showed that the surface states of the islands vary with their size. Occupied states exhibit a sizeable downward energy shift as the island size decreases. The position of
Externí odkaz:
http://arxiv.org/abs/0709.1631
The magnetic coupling between single Co atoms adsorbed on a copper surface is determined by probing the Kondo resonance using low-temperature scanning tunneling spectroscopy. The Kondo resonance, which is due to magnetic correlation effects between t
Externí odkaz:
http://arxiv.org/abs/cond-mat/0611716
The state of the art ab initio calculations of quantum mirages,the spin-polarization of surface-state electrons and the exchange interaction between magnetic adatoms in Cu and Co corrals on Cu(111) are presented. We find that the spin-polarization of
Externí odkaz:
http://arxiv.org/abs/cond-mat/0502506
We present a newly developed scheme for atomic relaxations of magnetic supported clusters. Our approach is based on the full potential Korringa-Kohn-Rostoker Green's function method and the second moment tight-binding approximation for many-body pote
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405674
Ab initio calculations of surface-state mediated interactions between Cu adatoms on transition metal surfaces are presented. We concentrate on Co/Cu(111) and Co(0001) substrates and compare results with our calculations for Cu(111). Our studies show
Externí odkaz:
http://arxiv.org/abs/cond-mat/0405644