Abstract
We study level crossings and spin flips in a system consisting of a spin-1 (an electron spin triplet) coupled to a nuclear spin of arbitrary size K, in the presence of a uniform magnetic field and the electron spin-spin interaction within the triplet. Through an analytical diagonalization based on the SU(3) Lie algebra, we find that the electron spin-spin interaction not only removes the curious degeneracy which appears in the absence of the interaction, but also produces some level anticrossings (LACs) for strong interactions. The real-time dynamics of the system shows that periodic spin flips occur at the LACs for arbitrary K, which might provide an option for nuclear or electron spin polarization.
Original language | English |
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Article number | 062507 |
Journal | Physical Review A |
Volume | 96 |
Issue number | 6 |
DOIs | |
Publication status | Published - 15 Dec 2017 |