https://doi.org/10.1140/epjb/e2003-00331-0
Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[3×3] molecular nanomagnet
1
Istituto Nazionale per
la Fisica della Materia, Dipartimento di Fisica, Università di
Parma, 43100 Parma, Italy
2
Istituto Nazionale
per la Fisica della Materia, Università Politecnica delle
Marche, 60131 Ancona, Italy
Corresponding author: a This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
9
October
2003
Published online:
8
December
2003
Abstract
Molecular nanomagnets, besides promising to open new frontiers in technology, have attracted huge interest in the scientific community because they can exhibit the phenomenon known as quantum tunnelling of the magnetization, i.e. coherent fluctuations of the direction of the total spin vector. In this paper we study a different quantum phenomenon involving fluctuations of the magnitude of the total spin vector. These fluctuations are related to the mixing between states with different spin quantum number, and imply new macroscopic effects, which we theoretically investigated in the Mn-[3×3] grid.
PACS: 75.45.+j – Macroscopic quantum phenomena in magnetic systems / 75.50.Xx – Molecular magnets / 52.70.Ds – Electric and magnetic measurements
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
