Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[3x3] molecular nanomagnet

Details Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[3x3] molecular nanomagnet Macroscopic evidence of quantum coherent oscillations of the total spin in the Mn-[3x3] molecular nanomagnet

2003-10-02

arxiv.org/abs/cond-mat/0310046v1

Eur. Phys. J. B 36, 169 (2003).

Physics

Condensed Matter

10 pages latex, 6 figures

Scientific paper

10.1140/epjb/e2003-00331-0

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-[3x3] grid.

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