Giant spin rotation in the normal metal/quantum spin Hall junction

Details Giant spin rotation in the normal metal/quantum spin Hall junction Giant spin rotation in the normal metal/quantum spin Hall junction

2009-01-05

arxiv.org/abs/0901.0438v1

Phys. Rev. Lett. 102, 166801 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

We study theoretically reflection problem in the junction between a normal metal and an insulator characterized by a parameter $M$, which is a usual insulator for $M>0$ or a quantum spin Hall system for $M<0$. The spin rotation angle $\alpha$ at the reflection is obtained in the plane of $M$ and the incident angle $\theta$ measured from the normal to the interface. The $\alpha$ shows rich structures around the quantum critical point M=0 and $\theta=0$, i.e., $\alpha$ can be as large as $\sim \pi$ at an incident angle in the quatum spin Hall case $M<0$ because the helical edge modes resonantly enhance the spin rotation, which can be used to map the energy dispersion of the helical edge modes. As an experimentally relevant system, we also study spin rotation effect in quantum spin Hall/normal metal/quantum spin Hall trilayer junction.

Affiliated with

Also associated with

No associations

Rating

Giant spin rotation in the normal metal/quantum spin Hall junction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Giant spin rotation in the normal metal/quantum spin Hall junction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Giant spin rotation in the normal metal/quantum spin Hall junction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-34769