Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems

Details Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems

2009-09-10

arxiv.org/abs/0909.1979v1

Phys. Rev. B 80, 165302 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

We use linear response theory to study the transverse force generated by an external electric field and hence possible charge Hall effect in spin-orbit coupled systems. In addition to the Lorentz force that is parallel to the electric field, we find that the transverse force perpendicular to the applied electric field may not vanish in a system with an anisotropic energy dispersion. Surprisingly, in contrast to the previous results, the transverse force generated by the electric field does not depend on the spin current, but in general, it is related to the second derivative of energy dispersion only. Furthermore, we find that the transverse force does not vanish in the Rashba-Dresselhaus system. Therefore, the non-vanishing transverse force acts as a driving force and results in charge imbalance at the edges of the sample. The estimated ratio of the Hall voltage to the longitudinal voltage is $\sim 10^{-3}$. The disorder effect is also considered in the study of the Rashba-Dresselhaus system. We find that the transverse force vanishes in the presence of impurities in this system because the vertex correction and the anomalous velocity of the electron accidently cancel each other.

Affiliated with

Also associated with

No associations

Rating

Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems 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 Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transverse force generated by an electric field and transverse charge imbalance in spin-orbit coupled systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-132098