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Fransson, J. Many-body approach to spin-dependent transport in quantum dot systems / J. . Fransson, O. . Eriksson, I. . Sandalov> // Phys. Rev. Lett. - 2002. - Vol. 88, Is. 22. - Ст. 226601, DOI 10.1103/PhysRevLett.88.226601. - Cited References: 37
. - ISSN 0031-9007РУБ Physics, Multidisciplinary Рубрики: SINGLE-ELECTRON TRANSISTOR COULOMB-BLOCKADE ANDERSON IMPURITY ROOM-TEMPERATURE TUNNEL-JUNCTIONS EVEN NUMBER MODEL MAGNETORESISTANCE OSCILLATIONS CONDUCTANCE Аннотация: By means of a diagram technique for Hubbard operators, we show the existence of a spin-dependent renormalization of the localized levels in an interacting region, e.g., quantum dot, modeled by the Anderson Hamiltonian with two conduction bands. It is shown that the renormalization of the levels with a given spin direction is due to kinematic interactions with the conduction subbands of the opposite spin. The consequence of this dressing of the localized levels is a drastically decreased tunneling current for ferromagnetically ordered leads compared to that of paramagnetically ordered leads. Furthermore, the studied system shows a spin-dependent resonant tunneling behavior for ferromagnetically ordered leads.
WOS, Читать в сети ИФ Держатели документа: Univ Uppsala, Condensed Matter Theory Grp, S-75121 Uppsala, Sweden RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia ИФ СО РАН Доп.точки доступа: Eriksson, O.; Sandalov, I. } Найти похожие
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