Physics – Condensed Matter – Materials Science
Scientific paper
2002-01-11
Physics
Condensed Matter
Materials Science
4 pages
Scientific paper
10.1103/PhysRevB.66.054412
We present rigorous solution of problems of tunneling with dissipation and decoherence for a spin of an atom or a molecule in an isotropic solid matrix. Our approach is based upon switching to a rotating coordinate system coupled to the local crystal field. We show that the spin of a molecule can be used in a qubit only if the molecule is strongly coupled with its atomic environment. This condition is a consequence of the conservation of the total angular momentum (spin + matrix), that has been largely ignored in previous studies of spin tunneling.
Chudnovsky Eugene M.
Martinez-Hidalgo X.
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