Composite Fermion States around 2D Hole Landau Level Filling Factor 3/2 in Tilted Magnetic Fields

Abstract

Transport measurements under a tilted magnetic field were performed on a series of C-doped (001) AlGaAs/GaAs/AlGaAs two-dimensional hole samples. Due to a large g-factor, Zeeman energy is large and comparable to the cyclotron energy in these samples. On the other hand, it was found that the in-plane component g// is small, and the effect of tilted magnetic field is mainly to increase the effective mass of holes. We investigate the spin transition of composite fermion states around Landau level (LL) filling factor 3/2. We found that the ν = 4/3 state encounters a partial to full spin polarization transition, conforming to the same pattern as that of electron samples. In addition, high-resistance phase emerges at ν = 3/2 under very high tilt angles. We interpret both of these phenomena as a consequence of LL crossings that are mainly driven by the orbital effects. The roles that the spin degrees of freedom play in FQH states around ν = 3/2 in these systems will be discussed.

References in corpus (13)

• Evidence for an Anisotropic State of Two-Dimensional Electrons in High Landau Levels
• Strongly Anisotropic Transport in Higher Two-Dimensional Landau Levels
• Rashba spin splitting in two-dimensional electron and hole systems
• Anisotropic States of Two-Dimensional Electron Systems in High Landau Levels: Effect of an In-Plane Magnetic Field
• Strongly Anisotropic Electronic Transport at Landau Level Filling Factor $\nu =9/2$ and $\nu =5/2$ Under Tilted Magnetic Field
• Highly anisotropic g-factor of two-dimensional hole systems
• Carbon doped symmetric GaAs/AlGaAs quantum wells with hole mobilities beyond 10^6 cm^2/Vs
• Density and well width dependences of the effective mass of twodimensional holes in (100) GaAs quantum wells measured by cyclotron resonance at microwave frequencies
• Nematic quantum phase transition of composite Fermi liquids in half-filled Landau levels and their geometric response
• Magnetotransport in C-doped AlGaAs heterostructures
• Impact of spin-orbit coupling on quantum Hall nematic phases
• Fractional Quantum Hall Effect in a Diluted Magnetic Semiconductor
• Morphing of 2D Hole Systems at $\nu =3/2$ in Parallel Magnetic Fields: Compressible, Stripe, and Fractional Quantum Hall Phases

Cited by in corpus (2)

• Highly-Anisotropic Even-Denominator Fractional Quantum Hall State in an Orbitally-Coupled Half-Filled Landau Level
• Orientation of hole quantum Hall nematic phases in an out-of-plane electric field