The mixed-valent manganese [3 x 3] grid [Mn(III)4Mn(II)5(2poap-2H)6](ClO4)10.10H2O, a mesoscopic spin-1/2 cluster

Details The mixed-valent manganese [3 x 3] grid [Mn(III)4Mn(II)5(2poap-2H)6](ClO4)10.10H2O, a mesoscopic spin-1/2 cluster The mixed-valent manganese [3 x 3] grid [Mn(III)4Mn(II)5(2poap-2H)6](ClO4)10.10H2O, a mesoscopic spin-1/2 cluster

2006-06-15

arxiv.org/abs/cond-mat/0606421v1

Inorg. Chem. 45, 3295 (2006)

Physics

Condensed Matter

Strongly Correlated Electrons

28 double-spaced pages, 7 figures, 2 tables

Scientific paper

The magnetic susceptibility, and low-temperature magnetization curve, of the [3 x 3] grid [Mn(III)4Mn(II)5(2poap-2H)6](ClO4)10.10H2O is analyzed within a spin Hamiltonian approach. The Hilbert space is huge (4,860,000 states), but the consequent use of all symmetries and a two-step fitting procedure nevertheless allows the best-fit determination of the magnetic exchange parameters in this system from complete quantum mechanical calculations. The cluster exhibits a total spin S = 1/2 ground state; the implications are discussed.

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