hyperfine interaction

Due to the weak spin-orbital coupling and hyperfine interaction, the carriers in organic materials have a relative long spin relaxation time, so it is a good candidate for spin injection and transport.

有机材料具有较弱的自旋-轨道耦合作用和超精细相互作用，载流子的自旋弛豫时间比较长，因而是理想的实现自旋极化注入候选材料。

We first give a comprehensive spin electronic Hamiltonian including applied magnetic field, hyperfine interaction and spin-orbit coupling effect.

给出了包括超精细作用和自旋轨道耦合作用在内的自旋电子哈密顿量。

It is well known that the spin-orbit coupling and hyperfine interaction in organic materials are very weak. So the spin relaxation time in organic materials is relative long.

有机材料由于具有较弱的自旋轨道耦合以及超精细相互作用，因此相对于普通无机半导体具有较长的自旋弛豫时间。