244 citations · 1.4k across the 40 of their papers we have counts for
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cond-mat1997★ 6 cited
Quantum Tunneling in Ferrimagnetic Nanoparticles Coupled to a Spin Bath: An Effective Hamiltonian
I. S. Tupitsyn
An effective Hamiltonian, describing quantum tunneling in ferrimagnetic nanoparticles which includes interactions between the electronic spins of nanoparticle and microscopic envir…
cond-mat1997★ 32 cited
Effective Hamiltonian in the Problem of a "Central Spin" Coupled to a Spin Environment
I. S. Tupitsyn, N. V. Prokof'ev, P. C. E. Stamp
We consider here the problem of a "giant spin", with spin quantum number S>>1, interacting with a set of microscopic spins. Interactions between the microscopic spins are ignored.…