Dimensionality effects in the local density of states of ferromagnetic hosts probed via STM: Spin-polarized quantum beats and spin filtering

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorSeridonio, A. C.
dc.creatorLeandro, S. C.
dc.creatorGuessi, L. H.
dc.creatorSiqueira, E. C.
dc.creatorSouza, F. M.
dc.creatorVernek, E.
dc.creatorFigueira, M. S.
dc.creatorEgues, J. C.
dc.date2014-05-27T11:28:38Z
dc.date2016-10-25T18:45:27Z
dc.date2014-05-27T11:28:38Z
dc.date2016-10-25T18:45:27Z
dc.date2013-03-05
dc.date.accessioned2017-04-06T02:16:16Z
dc.date.available2017-04-06T02:16:16Z
dc.identifierPhysical Review B - Condensed Matter and Materials Physics, v. 87, n. 12, 2013.
dc.identifier1098-0121
dc.identifier1550-235X
dc.identifierhttp://hdl.handle.net/11449/74799
dc.identifierhttp://acervodigital.unesp.br/handle/11449/74799
dc.identifier10.1103/PhysRevB.87.125104
dc.identifierWOS:000315733200002
dc.identifier2-s2.0-84874820607.pdf
dc.identifier2-s2.0-84874820607
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.87.125104
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/895559
dc.descriptionWe theoretically investigate the local density of states (LDOS) probed by an STM tip of ferromagnetic metals hosting a single adatom and a subsurface impurity. We model the system via the two-impurity Anderson Hamiltonian. By using the equation of motion with the relevant Green's functions, we derive analytical expressions for the LDOS of two host types: a surface and a quantum wire. The LDOS reveals Friedel-like oscillations and Fano interference as a function of the STM tip position. These oscillations strongly depend on the host dimension. Interestingly, we find that the spin-dependent Fermi wave numbers of the hosts give rise to spin-polarized quantum beats in the LDOS. Although the LDOS for the metallic surface shows a damped beating pattern, it exhibits the opposite behavior in the quantum wire. Due to this absence of damping, the wire operates as a spatially resolved spin filter with a high efficiency. © 2013 American Physical Society.
dc.languageeng
dc.relationPhysical Review B: Condensed Matter and Materials Physics
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.titleDimensionality effects in the local density of states of ferromagnetic hosts probed via STM: Spin-polarized quantum beats and spin filtering
dc.typeOtro


Este ítem pertenece a la siguiente institución