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Studies of transverse and longitudinal relaxations of Mn in molecular cluster magnet MnAc
T. Goto, T. Koshiba, T. Kubo +1
The transverse and longitudinal relaxation rates 1/ and 1/ of Mn in molecular cluster magnet MnAc have been measured al low temperatures down to 200mK and i…
Conical Singular Solutions in (2+1)-Dimensional Gravity Employing the ADM Canonical Formalism
M. Kenmoku, S. Uchida, T. Matsuyama
Topological solutions in the (2+1)-dimensional Einstein theory of gravity are studied within the ADM canonical formalism. It is found that a conical singularity appears in the clos…
Binding Energy of Scalar Bound State by Topologically Massive Interaction: Fermion and Anti-fermion System with Heavy Mass
Toyoki Matsuyama, Hideko Nagahiro
A bound state problem in a topologically massive quantum electrodynamics is investigated by using a non-perturbative method. We formulate the Bethe- Salpeter equation for scalar bo…
55Mn NMR in Mn12 acetate: Hyperfine interaction and magnetic relaxation of cluster
Takeji Kubo, Takao Goto, Takeshi Koshiba +2
The 55Mn NMR in oriented powder Mn12Ac has been investigated at 1.4-2.0 K in zero field and with external fields along the c-axis. Three kinds of 55Mn NMR composed of five-fold qua…