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Fransson, J. A perfect spin-filter quantum dot system / J. . Fransson, I. . Sandalov, O. . Eriksson> // J. Phys.: Condens. Matter. - 2004. - Vol. 16, Is. 16. - P. L249-L254, DOI 10.1088/0953-8984/16/16/L03. - Cited References: 39
. - ISSN 0953-8984РУБ Physics, Condensed Matter Рубрики: NARROW ENERGY BANDS ELECTRON CORRELATIONS MAGNETIC-FIELD MAGNETOTRANSPORT CONDUCTANCE RESISTANCE BARRIER FORMULA VALVE LIMIT Кл.слова (ненормированные): Electric potential -- Electron tunneling -- Magnetic couplings -- Magnetic fields -- Magnetic filters -- Transport properties -- Electron correlations -- Magnetic contacts -- Source-drain voltage -- Spin projections -- Semiconductor quantum dots Аннотация: The discovery of a novel effect in the transport through a QD spin-dependently coupled to magnetic contacts is reported. For a finite range of source-drain voltages the spin projections of the current cancel exactly, resulting in a completely suppressed output current. The spin down current behaves as one normally expects whereas the spin up current becomes negative. As the source-drain voltage is increased the spin up current eventually becomes positive. Thus, tuning the source-drain voltage such that the spin up current vanishes will result in a perfect spin filter.
WOS, Scopus, Читать в сети ИФ Держатели документа: Royal Inst Technol, Dept Phys, KTH, SE-10691 Stockholm, Sweden Univ Uppsala, Dept Phys, SE-75121 Uppsala, Sweden RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany ИФ СО РАН Department of Physics, Royal Institute of Technology (KTH), SE-106 91 Stockholm, Sweden Physics Department, Uppsala University, Box 530, SE-751 21 Uppsala, Sweden Kirensky Institute of Physics, RAS, 660036 Krasnoyarsk, Russian Federation Max-Plank-Inst. Phys. Complex Sys., Nothnitzer Stra?e 38, 01187 Dresden, Germany Dept. of Mat. Sci. and Engineering, Royal Institute of Technology, SE-100 44 Stockholm, Sweden Доп.точки доступа: Sandalov, I.; Eriksson, O. } Найти похожие
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