Optical Emission Spectroscopy Study of Competing Phases of Electrons in the Second Landau Level

Physical Review Letters
A L LevyJ D Watson

Abstract

Quantum phases of electrons in the filling factor range 2≤ν≤3 are probed by the weak optical emission from the partially populated second Landau level and spin wave measurements. Observations of optical emission include a multiplet of sharp peaks that exhibit a strong filling factor dependence. Spin wave measurements by resonant inelastic light scattering probe breaking of spin rotational invariance and are used to link this optical emission with collective phases of electrons. A remarkably rapid interplay between emission peak intensities manifests phase competition in the second Landau level.

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Citations

Jun 15, 2017·Journal of Physics. Condensed Matter : an Institute of Physics Journal·C Trallero-GinerL K Castelano

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