Breakdown of the Giant Spin Model in the Magnetic Relaxation of the Mn6 Nanomagnets

S. Carretta, T. Guidi, P. Santini, G. Amoretti, O. Pieper, B. Lake, J. van Slageren, F. El Hallak, W. Wernsdorfer, H. Mutka, M. Russina, C. J. Milios, E. K. Brechin

Research output: Contribution to journalArticlepeer-review

Abstract

We study the spin dynamics in two variants of the high-anisotropy Mn-6 nanomagnet by inelastic neutron scattering, magnetic resonance spectroscopy and magnetometry. We show that a giant-spin picture is completely inadequate for these systems and that excited S multiplets play a key role in determining the effective energy barrier for the magnetization reversal. Moreover, we demonstrate the occurrence of tunneling processes involving pair of states having different total spin.

Original languageEnglish
Article number157203
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Volume100
Issue number15
DOIs
Publication statusPublished - 18 Apr 2008

Keywords

  • MOLECULES

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