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  • Nano Express
  • Open Access

Spin dynamics of an ultra-small nanoscale molecular magnet

Nanoscale Research Letters20072:168

  • Received: 19 December 2006
  • Accepted: 13 February 2007
  • Published:


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.


  • Spin dynamics
  • Nanoscale molecular magnetism
  • Time-dependent spin autocorrelation function
  • Exchange interaction
  • Biquadratic exchange interaction
  • 75.10.Hk
  • 75.50.Xx


Authors’ Affiliations

Department of Physics, Prairie View A&M University, Prairie View, TX 77446, USA


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© to the authors 2007