Spin dynamics of an ultra-small nanoscale molecular magnet
Department of Physics, Prairie View A&M University, Prairie View, TX, 77446, USA
Nanoscale Research Letters 2007, 2:168-174 doi:10.1007/s11671-007-9049-5Published: 6 March 2007
We present mathematical transformations which allow us to calculate the spin dynamics of an ultra-small nanoscale molecular magnet consisting of a dimer system of classical (high) Heisenberg spins. We derive exact analytic expressions (in integral form) for the time-dependent spin autocorrelation function and several other quantities. The properties of the time-dependent spin autocorrelation function in terms of various coupling parameters and temperature are discussed in detail.