Size of linear superpositions in molecular nanomagnets (Articolo in rivista)

Type
Label
  • Size of linear superpositions in molecular nanomagnets (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.88.094413 (literal)
Alternative label
  • Troiani, F.; Zanardi, P. (2013)
    Size of linear superpositions in molecular nanomagnets
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Troiani, F.; Zanardi, P. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 88 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 10 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 9 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Consiglio Nazionale delle Ricerche (CNR); University of Southern California; University of Southern California; National University of Singapore (literal)
Titolo
  • Size of linear superpositions in molecular nanomagnets (literal)
Abstract
  • Molecular nanomagnets are zero-dimensional spin systems that exhibit quantum-mechanical behavior at low temperatures. Exploiting quantum-information theoretic measures, we quantify here the size of linear superpositions that can be generated within the ground multiplet of high-and low-spin nanomagnets. Amongst the former class of systems, we mainly focus on Mn-12 and Fe-8. General criteria for maximizing such measures are also outlined, and illustrated with reference to spin clusters of different geometries. The actual character (micro or macroscopic) of linear superpositions in low-spin systems is inherently ill-defined. Here, this issue is addressed with specific reference to the Cr7Ni and V-15 molecules, characterized by an S = 1/2 ground state. In both cases, the measures we obtain are larger than those of a single s = 1/2 spin but not proportionate to the number and value of the constituent spins. (literal)
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