Defect controlled magnetism in FeP/graphene/Ni(111)
2013 (English)In: Scientific Reports, ISSN 2045-2322, Vol. 3, 3405- p.Article in journal (Refereed) Published
Spin switching of organometallic complexes by ferromagnetic surfaces is an important topic in the area of molecular nanospintronics. Moreover, graphene has been shown as a 2D surface for physisorption of molecular magnets and strain engineering on graphene can tune the spin state of an iron porphyrin (FeP) molecule from S = 1 to S = 2. Our ab initio density functional calculations suggest that a pristine graphene layer placed between a Ni(111) surface and FeP yields an extremely weak exchange interaction between FeP and Ni whereas the introduction of defects in graphene shows a variety of ferromagnetic and antiferromagnetic exchange interactions. Moreover, these defects control the easy axes of magnetization, strengths of magnetic anisotropy energies and spin-dipolar contributions. Our study suggests a new way of manipulating molecular magnetism by defects in graphene and hence has the potential to be explored in designing spin qubits to realize logic operations in molecular nanospintronics.
Place, publisher, year, edition, pages
2013. Vol. 3, 3405- p.
IdentifiersURN: urn:nbn:se:uu:diva-213899DOI: 10.1038/srep03405ISI: 000327784400002OAI: oai:DiVA.org:uu-213899DiVA: diva2:683742