论文标题
铁磁性绝缘子异质结构中的远程声子自旋传输
Long-Range Phonon Spin Transport in Ferromagnet-Nonmagnetic Insulator Heterostructures
论文作者
论文摘要
我们研究了在绝缘的铁磁性非磁铁 - 铁磁性异质结构中的声子自旋传输。我们表明，旋转和声子之间的磁弹性相互作用导致磁体之间的非局部自旋转移。该转移是由局部声子自旋电流介导的，并伴随着声子自旋积累。旋转电导在非定程上取决于系统尺寸，并且在逼真的材料参数上衰减尺寸，远远超过了镁旋转电流的衰减长度。
We investigate phonon spin transport in an insulating ferromagnet-nonmagnet-ferromagnet heterostructure. We show that the magnetoelastic interaction between the spins and the phonons leads to nonlocal spin transfer between the magnets. This transfer is mediated by a local phonon spin current and accompanied by a phonon spin accumulation. The spin conductance depends nontrivially on the system size, and decays over millimeter length scales for realistic material parameters, far exceeding the decay lengths of magnonic spin currents.
