Haraldsen JT. Heisenberg pentamer: insights into inelastic neutron scattering on magnetic clusters.
PHYSICAL REVIEW LETTERS 2011;
107:037205. [PMID:
21838400 DOI:
10.1103/physrevlett.107.037205]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 05/16/2011] [Indexed: 05/31/2023]
Abstract
Assuming Heisenberg interactions and the symmetric case of a spin S-S' pentamer, the energy eigenstates can be determined exactly. With the energies known, the inelastic neutron scattering intensities are then calculated for the special case of a 1-1/2 pentamer. Through an analysis of these results, two main insights are gained. (1) Because of symmetry constraints, not all ΔS(tot) = ±1 transitions are accessible by inelastic neutron scattering (INS). This constrains the standard selections rules for magnetic excitations. (2) The INS signatures of magnetic clusters are directly dependent on the state and component that is excited.
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