Carretta, S;
Guidi, T;
Santini, P;
Amoretti, G;
Pieper, O;
Lake, B;
van Slageren, J;
... Brechin, EK; + view all
(2008)
Breakdown of the giant spin model in the magnetic relaxation of the Mn-6 nanomagnets.
PHYS REV LETT
, 100
(15)
, Article 157203. 10.1103/PhysRevLett.100.157203.
![[thumbnail of 126457.pdf]](https://discovery-pp.ucl.ac.uk/style/images/fileicons/application_pdf.png) Preview |
PDF
126457.pdf Download (781kB) |
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.
| Type: | Article |
|---|---|
| Title: | Breakdown of the giant spin model in the magnetic relaxation of the Mn-6 nanomagnets |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.100.157203 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.100.157203 |
| Language: | English |
| Additional information: | © 2008 The American Physical Society |
| Keywords: | MOLECULES |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/126457 |
Archive Staff Only
 |
View Item |
