The SPIN package enables coupled spin dynamics and molecular dynamics simulations. The package provides the following features: * defining a classical magnetic atomic spin associated to each magnetic atom in the system * integrating the equations of motion for the coupled spin-lattice system * implementing magnetic pair interactions and magnetic forces * thermostating and applying a transverse damping to the magnetic spins * computing and outputing magnetic quantities The different options provided by this package are explained in the LAMMPS documentation. Once you have successfully built LAMMPS with this package, you can test it using one of the input files provided from the examples/SPIN dir: ./lmp_serial < lammps/examples/SPIN/cobalt_hcp/in.spin.cobalt_hcp == Credits and license == The person who created this package is Julien Tranchida (jtranch at sandia.gov). You can contact him if you have questions.