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cond-mat.mes-hall2003
Bohr-Sommerfeld quantization of spin Hamiltonians
Anupam Garg, Michael Stone
The Bohr-Sommerfeld rule for a spin system is obtained, including the first quantum corrections. The rule applies to both integer and half-integer spin, and respects Kramers degene…
cond-mat.mes-hall2000
Spin tunnelling in Molecular Magnets
Anupam Garg
We study spin tunneling in magnetic molecules, with special reference to Fe8. The article aims to give a pedagogical discussion of what is meant by the tunneling of a spin, and how…
cond-mat.mes-hall2000
Topological Quenching of Spin Tunneling in Mn_12-acetate Molecules
Chang-Soo Park, Anupam Garg
We investigate the topological quenching of spin tunneling in Mn_12-acetate molecules with an applied magnetic field along the hard axis. The model Hamiltonian describing this syst…