Spin dynamics in tunneling decay of a metastable state

Yue Ban, E. Ya. Sherman
2012 Physical Review A. Atomic, Molecular, and Optical Physics  
We analyze spin dynamics in the tunneling decay of a metastable localized state in the presence of spin-orbit coupling. We find that the spin polarization at short time scales is affected by the initial state while at long time scales both the probability- and the spin density exhibit diffraction-in-time phenomenon. We find that in addition to the tunneling time the tunneling in general can be characterized by a new parameter, the tunneling length. Although the tunneling length is independent
more » ... the spin-orbit coupling, it can be accessed by the spin rotation measurement.
doi:10.1103/physreva.85.052130 fatcat:ptq72nab4jgdnlbegwpfiqrxvm