Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells

Details Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells

2002-11-25

arxiv.org/abs/cond-mat/0211557v1

Phys. Rev. B 67, 045324 (2003)

Physics

Condensed Matter

5 pages, 5 figures; to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.67.045324

We study the spin and charge dynamics of electrons in n-doped II--VI semiconductor multiple quantum wells when one or more quantum wells are doped with Mn. The interplay between strongly nonlinear inter-well charge transport and the large tunable spin-splitting induced by exchange interactions with spin-polarized Mn ions produces interesting new spin dependent features. The tunneling current between quantum wells can be strongly spin polarized and, under certain conditions, can develop self sustained oscillations under a finite dc voltage. The spin polarization oscillates in both magnetic and nonmagnetic quantum wells and the time average in magnetic wells can differ from its zero-voltage value. Our numerical simulations demonstrate that the amplitude of the spin polarization oscillations depends on the distribution of magnetic wells within the sample. We discuss how the spin polarized current and the spin polarization of the quantum wells can be tailored experimentally.

Affiliated with

Also associated with

No associations

Rating

Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells 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 Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin-polarized current oscillations in diluted magnetic semiconductor multiple quantum wells will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-253629