Role of exciton screening in the 7/3 fractional quantum Hall effect.

@article{Balram2013RoleOE,
  title={Role of exciton screening in the 7/3 fractional quantum Hall effect.},
  author={Ajit C. Balram and Ying-Hai Wu and G. J. Sreejith and Arkadiusz W{\'o}js and Jainendra K. Jain},
  journal={Physical review letters},
  year={2013},
  volume={110 18},
  pages={186801}
}
The excitations of the 7/3 fractional Hall state, one of the most prominent states in the second Landau level, are not understood. We study the effect of screening by composite fermion excitons and find that it causes a strong renormalization at 7/3, thanks to a relatively small exciton gap and a relatively large residual interaction between composite… CONTINUE READING