Spin-orbit coupling-induced magnetic phase in the d-density-wave phase of La(2-x)Ba(x)CuO4 superconductors.
Spin-orbit coupling-induced magnetic phase in the d-density-wave phase of La(2-x)Ba(x)CuO4 superconductors.
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DOI：
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发表时间：
2005
影响因子：
8.6
通讯作者：
Congjun Wu;J. Zaanen;Shoucheng Zhang
中科院分区：
文献类型：
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作者：
Congjun Wu;J. Zaanen;Shoucheng Zhang
我们研究了自旋轨道耦合在d-密度波（DDW）相的影响。在La（2-x）Ba（x）CuO_4的低温正交相中，我们发现自旋-轨道耦合在DDW相中产生了铁磁矩，这些铁磁矩在[110]方向上沿着极化，并且具有相当大的幅度.这种效应在超导阶段不存在。另一方面，如果在零磁场下不存在d密度波序，则沿[110]方向的磁场沿着总是感应出这种交错的轨道电流。我们讨论的DDW状态的实验约束，根据我们的理论预测。
We study the effects of spin-orbit coupling in the d-density wave (DDW) phase. In the low-temperature orthorhombic phase of La(2-x)Ba(x)CuO4, we find that spin-orbit coupling induces ferromagnetic moments in the DDW phase, which are polarized along the [110] direction with a considerable magnitude. This effect does not exist in the superconducting phase. On the other hand, if the d-density wave order does not exist at zero field, a magnetic field along the [110] direction always induces such a staggered orbital current. We discuss experimental constraints on the DDW states in light of our theoretical predictions.