论文标题
拓扑绝缘子纳米线T缝线中的Andreev反射
Crossed Andreev reflection in topological insulator nanowire T-junctions
论文作者
论文摘要
我们在数值上研究了拓扑绝缘子纳米线T结中的Andreev反射（CAR），其中一个铅由超导体邻近。我们基于3D BHz模型执行逼真的模拟，并将结果与有效的2D表面模型的结果进行比较，其计算成本要低得多。两种方法都表明，应在广泛的参数范围内可以清楚地观察到汽车，包括在限制范围内的完美汽车。此外，它可以由磁场控制，并且对无序是可靠的。我们有效的2D实施允许对微肯定的系统建模，这是实验设置的典型代理，但对于3D模型来说，计算太重了。
We numerically study crossed Andreev reflection (CAR) in a topological insulator nanowire T-junction where one lead is proximitized by a superconductor. We perform realistic simulations based on the 3D BHZ model and compare the results with those from an effective 2D surface model, whose computational cost is much lower. Both approaches show that CAR should be clearly observable in a wide parameter range, including perfect CAR in a somewhat more restricted range. Furthermore, it can be controlled by a magnetic field and is robust to disorder. Our effective 2D implementation allows to model systems of micronsize, typical of experimental setups, but computationally too heavy for 3D models.
