Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact
Publication: Research - peer-review › Journal article – Annual report year: 2012
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Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact. / Koleini, Mohammad; Brandbyge, Mads.
In: Beilstein Journal of Nanotechnology, Vol. 3, 2012, p. 589-596.Publication: Research - peer-review › Journal article – Annual report year: 2012
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TY - JOUR
T1 - Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact
A1 - Koleini,Mohammad
A1 - Brandbyge,Mads
AU - Koleini,Mohammad
AU - Brandbyge,Mads
PB - Beilstein-Institut zur Förderung der Chemischen Wissenschaften
PY - 2012
Y1 - 2012
N2 - Motivated by the recent achievements in the manipulation of C-60 molecules in STM experiments, we study theoretically the structure and electronic properties of a C-60 molecule in an STM tunneljunction with a magnetic tip and magnetic adatom on a Cu(111) surface using first-principles calculations. For the case of a vanadium tip/adatom, we demonstrate how spin coupling between the magnetic V atoms, mediated by the C-60, can be observed in the electronic transport, which display a strong spin-filtering effect, allowing mainly majority-spin electrons to pass (>95%). Moreover, we find a significant change in the conductance between parallel and anti-parallel spin polarizations in the junction (86%) which suggests that STM experiments should be able to characterize the magnetism and spin coupling for these systems.
AB - Motivated by the recent achievements in the manipulation of C-60 molecules in STM experiments, we study theoretically the structure and electronic properties of a C-60 molecule in an STM tunneljunction with a magnetic tip and magnetic adatom on a Cu(111) surface using first-principles calculations. For the case of a vanadium tip/adatom, we demonstrate how spin coupling between the magnetic V atoms, mediated by the C-60, can be observed in the electronic transport, which display a strong spin-filtering effect, allowing mainly majority-spin electrons to pass (>95%). Moreover, we find a significant change in the conductance between parallel and anti-parallel spin polarizations in the junction (86%) which suggests that STM experiments should be able to characterize the magnetism and spin coupling for these systems.
U2 - 10.3762/bjnano.3.69
DO - 10.3762/bjnano.3.69
JO - Beilstein Journal of Nanotechnology
JF - Beilstein Journal of Nanotechnology
SN - 2190-4286
VL - 3
SP - 589
EP - 596
ER -