We report an in-depth study on how spin information propagates at supramolecular scale through afamily of heteroaromatic linkers. By density-functional theory calculations, we rationalize the behavior ofa series of Cr7Ni dimers for which we are able to systematically change the aromatic linker thus tuning thestrength of the magnetic interaction, as experimentally shown by low temperature micro-SQUID andspecific heat measurements. We also predict a cos2 dependence of the magnetic coupling on the twistingangle between the aromatic cycles in bicyclic linkers, a mechanism parallel to charge transport on similarsystems [L. Venkataraman et al., Nature (London) 442, 904 (2006)].

Propagation of spin information at supra-molecular scale through hetero-aromatic linkers / V., Bellini; G., Lorusso; A., Candini; T. B., Faust; G. A., Timco; W., Wernsdorfer; R. E. P., Winpenny; Affronte, Marco. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 106:(2011), pp. 227205-227209. [10.1103/PhysRevLett.106.227205]

Propagation of spin information at supra-molecular scale through hetero-aromatic linkers

AFFRONTE, Marco
2011

Abstract

We report an in-depth study on how spin information propagates at supramolecular scale through afamily of heteroaromatic linkers. By density-functional theory calculations, we rationalize the behavior ofa series of Cr7Ni dimers for which we are able to systematically change the aromatic linker thus tuning thestrength of the magnetic interaction, as experimentally shown by low temperature micro-SQUID andspecific heat measurements. We also predict a cos2 dependence of the magnetic coupling on the twistingangle between the aromatic cycles in bicyclic linkers, a mechanism parallel to charge transport on similarsystems [L. Venkataraman et al., Nature (London) 442, 904 (2006)].
106
227205
227209
Propagation of spin information at supra-molecular scale through hetero-aromatic linkers / V., Bellini; G., Lorusso; A., Candini; T. B., Faust; G. A., Timco; W., Wernsdorfer; R. E. P., Winpenny; Affronte, Marco. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 106:(2011), pp. 227205-227209. [10.1103/PhysRevLett.106.227205]
V., Bellini; G., Lorusso; A., Candini; T. B., Faust; G. A., Timco; W., Wernsdorfer; R. E. P., Winpenny; Affronte, Marco
File in questo prodotto:
File Dimensione Formato  
propagation of spin information PhysRevLett.106.227205.pdf

accesso aperto

Descrizione: articolo principale
Tipologia: Post-print dell'autore (bozza post referaggio)
Dimensione 1.46 MB
Formato Adobe PDF
1.46 MB Adobe PDF Visualizza/Apri
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/691848
Citazioni
  • ???jsp.display-item.citation.pmc??? 2
  • Scopus 41
  • ???jsp.display-item.citation.isi??? 36
social impact