Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact

Publication: Research - peer-reviewJournal 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-reviewJournal article – Annual report year: 2012

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Author

Koleini, Mohammad; Brandbyge, Mads / Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact.

In: Beilstein Journal of Nanotechnology, Vol. 3, 2012, p. 589-596.

Publication: Research - peer-reviewJournal article – Annual report year: 2012

Bibtex

@article{b9aee384a4c54f87b39fa7b930b6b8fa,
title = "Strong spin-filtering and spin-valve effects in a molecular V-C-60-V contact",
publisher = "Beilstein-Institut zur Förderung der Chemischen Wissenschaften",
author = "Mohammad Koleini and Mads Brandbyge",
year = "2012",
doi = "10.3762/bjnano.3.69",
volume = "3",
pages = "589--596",
journal = "Beilstein Journal of Nanotechnology",
issn = "2190-4286",

}

RIS

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 -