Spin-wave description of nuclear spin-lattice relaxation in Mn12O12 acetate.
نویسندگان
چکیده
In response to recent nuclear-magnetic-resonance (NMR) measurements on the molecular cluster Mn12O12 acetate, we study the nuclear spin-lattice relaxation rate 1/T(1), developing a modified spin-wave theory. Our microscopic new approach, which is distinct from previous macroscopic treatments of the cluster as a rigid spin of S=10, not only excellently interprets the observed temperature and applied-field dependences of 1/T(1) for 55Mn nuclei but also strongly supports the 13C NMR evidence for spin delocalization over the entire molecule.
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ورودعنوان ژورنال:
- Physical review letters
دوره 89 15 شماره
صفحات -
تاریخ انتشار 2002