Optical emission spectroscopy study of competing phases of electrons in the second Landau level

Abstract

Quantum phases of electrons in the filling factor range $2\le \nu \le 3$ 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.

References in corpus (6)

• Particle-hole symmetry and the Pfaffian state
• Particle-Hole Symmetry and the $\nu =5/2$ Quantum Hall State
• Finite Layer Thickness Stabilizes the Pfaffian State for the 5/2 Fractional Quantum Hall Effect: Wavefunction Overlap and Topological Degeneracy
• Tilt-Induced Anisotropic to Isotropic Phase Transition at $\nu =5/2$
• Soft Spin Wave Near nu=1: Evidence for a Magnetic Instability in Skyrmion Systems
• Localized quasiholes and the Majorana fermion in fractional quantum Hall state at nu=5/2 via direct diagonalization

Cited by in corpus (10)

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• Collective electronic excitation in a trapped ensemble of photogenerated dipolar excitons and free holes revealed by inelastic light scattering
• Optical excitations in compressible and incompressible two-dimensional electron liquids
• Overflow of a dipolar exciton trap at high magnetic fields
• Domain Textures in the Fractional Quantum Hall Effect
• Few-body collective excitations beyond Kohn's theorem in quantum Hall systems
• Observation of new plasmons in the fractional quantum Hall effect: interplay of topological and nematic orders