Absorption in the fractional quantum Hall regime: trion dichroism and spin polarization

Physics – Condensed Matter – Mesoscale and Nanoscale Physics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

4 pages, 4 figures (Fig 4 is in color)

Scientific paper

10.1103/PhysRevLett.98.156803

We present measurements of optical interband absorption in the fractional quantum Hall regime in a GaAs quantum well in the range 0 < nu < 1. We investigate the mechanism of singlet trion absorption, and show that its circular dichroism can be used as a probe of the spin polarization of the ground state of the two-dimensional electron system (2DES). We find that at nu = 1/3 the 2DES is fully spin-polarized. Increasing the filling factor results in a gradual depolarization, with a sharp minimum in the dichroism near nu = 2/3. We find that in the range 0.5 < nu < 0.85 the 2DES remains partially polarized for the broad range of magnetic fields from 2.75 to 11 Tesla. This is consistent with the presence of a mixture of polarized and depolarized regions.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Absorption in the fractional quantum Hall regime: trion dichroism and spin polarization 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 Absorption in the fractional quantum Hall regime: trion dichroism and spin polarization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Absorption in the fractional quantum Hall regime: trion dichroism and spin polarization will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-166728

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.