Spin-polarized transport through single-molecule magnet Mn6 complexes

Handle URI:
http://hdl.handle.net/10754/599694
Title:
Spin-polarized transport through single-molecule magnet Mn6 complexes
Authors:
Cremades, Eduard; Pemmaraju, C. D.; Sanvito, Stefano; Ruiz, Eliseo
Abstract:
The coherent transport properties of a device, constructed by sandwiching a Mn6 single-molecule magnet between two gold surfaces, are studied theoretically by using the non-equilibrium Green's function approach combined with density functional theory. Two spin states of such Mn6 complexes are explored, namely the ferromagnetically coupled configuration of the six MnIII cations, leading to the S = 12 ground state, and the low S = 4 spin state. For voltages up to 1 volt the S = 12 ground state shows a current one order of magnitude larger than that of the S = 4 state. Furthermore this is almost completely spin-polarized, since the Mn6 frontier molecular orbitals for S = 12 belong to the same spin manifold. As such the high-anisotropy Mn6 molecule appears as a promising candidate for implementing, at the single molecular level, both spin-switches and low-temperature spin-valves. © 2013 The Royal Society of Chemistry.
Citation:
Cremades E, Pemmaraju CD, Sanvito S, Ruiz E (2013) Spin-polarized transport through single-molecule magnet Mn6 complexes. Nanoscale 5: 4751. Available: http://dx.doi.org/10.1039/c3nr00054k.
Publisher:
Royal Society of Chemistry (RSC)
Journal:
Nanoscale
KAUST Grant Number:
FIC/2010/08
Issue Date:
2013
DOI:
10.1039/c3nr00054k
PubMed ID:
23599124
Type:
Article
ISSN:
2040-3364; 2040-3372
Sponsors:
The research has been supported by the Ministerio de Ciencia e Innovacion and Generalitat de Catalunya through grants CTQ2011-23862-C02-01 and 2009SGR-1459, respectively. E. C. thanks Ministerio de Ciencia e Innovacion for a predoctoral fellowship and for funding his stay in Dublin. C. D. P. and S. S. thank additional funding support from Science Foundation of Ireland (grant no. 07/IN/I945), by KAUST (FIC/2010/08) and by CRANN. The authors thankfully acknowledge the computer resources, technical expertise and assistance provided by the Barcelona Supercomputer Center.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorCremades, Eduarden
dc.contributor.authorPemmaraju, C. D.en
dc.contributor.authorSanvito, Stefanoen
dc.contributor.authorRuiz, Eliseoen
dc.date.accessioned2016-02-28T06:07:42Zen
dc.date.available2016-02-28T06:07:42Zen
dc.date.issued2013en
dc.identifier.citationCremades E, Pemmaraju CD, Sanvito S, Ruiz E (2013) Spin-polarized transport through single-molecule magnet Mn6 complexes. Nanoscale 5: 4751. Available: http://dx.doi.org/10.1039/c3nr00054k.en
dc.identifier.issn2040-3364en
dc.identifier.issn2040-3372en
dc.identifier.pmid23599124en
dc.identifier.doi10.1039/c3nr00054ken
dc.identifier.urihttp://hdl.handle.net/10754/599694en
dc.description.abstractThe coherent transport properties of a device, constructed by sandwiching a Mn6 single-molecule magnet between two gold surfaces, are studied theoretically by using the non-equilibrium Green's function approach combined with density functional theory. Two spin states of such Mn6 complexes are explored, namely the ferromagnetically coupled configuration of the six MnIII cations, leading to the S = 12 ground state, and the low S = 4 spin state. For voltages up to 1 volt the S = 12 ground state shows a current one order of magnitude larger than that of the S = 4 state. Furthermore this is almost completely spin-polarized, since the Mn6 frontier molecular orbitals for S = 12 belong to the same spin manifold. As such the high-anisotropy Mn6 molecule appears as a promising candidate for implementing, at the single molecular level, both spin-switches and low-temperature spin-valves. © 2013 The Royal Society of Chemistry.en
dc.description.sponsorshipThe research has been supported by the Ministerio de Ciencia e Innovacion and Generalitat de Catalunya through grants CTQ2011-23862-C02-01 and 2009SGR-1459, respectively. E. C. thanks Ministerio de Ciencia e Innovacion for a predoctoral fellowship and for funding his stay in Dublin. C. D. P. and S. S. thank additional funding support from Science Foundation of Ireland (grant no. 07/IN/I945), by KAUST (FIC/2010/08) and by CRANN. The authors thankfully acknowledge the computer resources, technical expertise and assistance provided by the Barcelona Supercomputer Center.en
dc.publisherRoyal Society of Chemistry (RSC)en
dc.titleSpin-polarized transport through single-molecule magnet Mn6 complexesen
dc.typeArticleen
dc.identifier.journalNanoscaleen
dc.contributor.institutionUniversitat de Barcelona, Barcelona, Spainen
dc.contributor.institutionTrinity College Dublin, Dublin, Irelanden
kaust.grant.numberFIC/2010/08en

Related articles on PubMed

All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.