SEARCH Articles Figures Tables Coupling Hamiltonians Coupling operator For coupling Hamiltonian coupling Hamiltonian operator Hamiltonian spin-orbit coupling Operators Spin-orbit Operators Spin-orbit coupling Orbit coupling Orbital operators Spin Hamiltonian Spin Hamiltonian Hamiltonians Spin operator Spin orbit hamiltonian Spin-orbit Hamiltonians Spin-orbit coupling Spin-orbital coupling Spin-orbital operator Spinning operation