Spin excitations in the Fractional Quantum Hall regime at $\nu \lesssim 1/3$

Abstract

We report inelastic light scattering experiments in the fractional quantum Hall regime at filling factors $\nu \lesssim 1/3$. A spin mode is observed below the Zeeman energy. The filling factor dependence of the mode energy is consistent with its assignment to spin flip excitations of composite fermions with four attached flux quanta ($\varphi$=4). Our findings reveal a composite fermion Landau level structure in the $\varphi$=4 sequence.

arXiv comment7 pages, 4 figures, EP2DS-16 conference, to appear in Physica E

References in corpus (8)

• Fractional Quantum Hall Effect of Composite Fermions
• Charged exctions in the fractional quantum Hall regime
• Evidence of Landau levels and interactions in low-lying excitations of composite fermions at 1/3 <= ν<= 2/5
• Composite-Fermion Picture for the Spin-Wave Excitation in the fractional quantum Hall system
• Study of Low Energy Spin Rotons in the Fractional Quantum Hall Effect
• Effective Mass of the Four Flux Composite Fermion at $\nu =1/4$
• Crossover and Coexistence of Quasiparticle Excitations in the Fractional Quantum Hall Regime at $\nu \le 1/3$
• Resonant Enhancement of Inelastic Light Scattering in the Fractional Quantum Hall Regime at $\nu =1/3$

Cited by in corpus (1)

• Dispersion of collective modes in spinful fractional quantum Hall states on the sphere