Energy spectrum reconstruction at the edge of a two-dimensional electron system with strong spin-orbit coupling

Abstract

We experimentally demonstrate the simultaneous reconstruction of the bulk and the edge energy spectra caused by strong spin-orbit interaction, at the two lowest filling factors $\nu =1$ and $\nu =2$ for $I{n}_{x}G{a}_{1-x}As$ two-dimensional electron system with $x=0.75$. The observed reconstruction is of different character at these filling factors: it is characterized by zeroing of the energy gap at the levels crossing point at $\nu =2$, while the reconstruction at $\nu =1$ goes through the coexistence of two $\nu =1$ quantum Hall phases with different spin projections. An analysis indicates a strong influence of many-body interaction on the reconstruction at $\nu =1$.

arXiv comment6 pages

References in corpus (10)

• Evidence for Skyrmions and Single Spin Flips in the Integer Quantized Hall Effect
• Separately contacted edge states: A new spectroscopic tool for the investigation of the quantum Hall effect
• Two-dimensional electron gas formation in undoped In[0.75]Ga[0.25]As/In[0.75]Al[0.25]As quantum wells
• Magneto-transport in high g-factor, low-density two-dimensional electron systems confined in In_0.75Ga_0.25As/In_0.75Al_0.25As quantum wells
• Hybridization of electron subbands in a double quantum well at quantizing magnetic field
• Spin gap in the 2D electron system of GaAs/AlGaAs single heterojunctions in weak magnetic fields
• Separately contacted edge states at high imbalance in the integer and fractional quantum Hall effect regime
• Impact of electron heating on the equilibration between quantum Hall edge channels
• Spin ordering: two different scenarios for the single and double layer structures in the fractional and integer quantum Hall effect regimes
• Local investigation of the energy gap within the incompressible strip in the quantum Hall regime

Cited by in corpus (4)

• Landau level spin diode in a GaAs two dimensional hole system
• Current-induced magnetization dynamics at the edge of a two-dimensional electron system with strong spin-orbit coupling
• Andreev reflection at the edge of a two-dimensional electron system with strong spin-orbit coupling
• Edge reconstruction of compressible Quantum Hall fluid in the filling fraction range 1/3 to 2/3