Incompressible electron liquid states studied by optical spectroscopy.

Journal article

Luminescence spectroscopy is very sensitive to electron correlation in two-dimensional (2D) systems: intensity modulation clearly identifies hierarchies of fractional quantum Hall states. We report measurements that reveal that the interaction between 2D electrons and a photoexcited valence-band hole, which is of fundamental importance in determining the recombination spectrum, is enhanced in a low-density 2D electron system. As a result, the luminescence energy is insensitive to the electron ground state in this system and a distinct Fermi-edge singularity is observed at zero and low magnetic fields. © 1993 The American Physical Society.

Authors: Turberfield, A; Ford, R; Harris, I; Ryan, J; Foxon, C

• Publication status: Published
• Journal: Physical review. B, Condensed matter
• Volume: 47
• Issue: 8
• Pages: 4794-4797
• Publication date: 1993-02-01
• DOI: 10.1103/physrevb.47.4794
• EISSN: 1095-3795
• ISSN: 0163-1829
• Language: English