A tunneling Hamiltonian theory of 0-πtransition in d-wave superconductor/ferromagnetic-insulator heterostructures
A tunneling Hamiltonian theory of 0-πtransition in d-wave superconductor/ferromagnetic-insulator heterostructures
复制标题
d波超导体/铁磁绝缘体异质结构中0-π跃迁的隧道哈密顿理论
DOI：
10.1088/1742-6596/248/1/012039
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
and Y. Asano
中科院分区：
文献类型：
--
作者：
S. Kawabata;S. Kashiway;Y. Tanaka;A. A. Golubov;and Y. Asano
我们报道了通过铁磁绝缘体（FIs）的约瑟夫森输运理论。最近在数值模拟的基础上预测了这种结中原子尺度0-π跃迁的出现。为了了解这种异常现象的物理机制，我们用隧道哈密顿方法解析计算了约瑟夫森电流，发现FI势垒中自旋相关的π相移导致了原子尺度的0-π跃迁。我们还展示了一个实验装置，用于观察基于具有LBCO势垒的d波结的原子尺度0-π跃迁。
We report a theory of the Josephson transport through ferromagnetic insulators (FIs). Recently the appearance of the atomic scale 0-π transition in such junctions has been predicted based on a numerical simulation. In order to understand the physical mechanism of this anomalous phenomena, we have analytically calculated the Josephson current using the tunneling Hamiltonian method and found that the spin dependent π-phase shift in the FI barrier gives the atomic scale 0-π transition. We also show an experimental setup for observing the atomic-scale 0-π transition based on a d-wave junction with a LBCO barrier.