Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-06-12
Phys. Rev. B 74, 024405 (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 4 figures, REVTEX4, to be published in PRB
Scientific paper
10.1103/PhysRevB.74.024405
The low-lying magnetic excitations in the dimer of single-molecule magnets (Mn4)2 are studied by inelastic neutron scattering as a function of hydrostatic pressure. The anisotropy parameters D and B04, which describe each Mn4 subunit, are essentially pressure independent, while the antiferromagnetic exchange coupling J between the two Mn4 subunits strongly depends on pressure, with an increase of 42% at 17 kbar. Additional pressure dependent powder X-ray measurements allow a structural interpretation of the findings.
Carver Graham
Christou George
Fernandez-Alonso Felix
Foguet-Albiol D.
Güdel Hans-Ulrich
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