The interplay between Zeeman splitting and spin-orbit coupling in InAs nanowires

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Mechanics

Background:

• Spin-orbit coupling (SOC) significantly alters electron energy structures in solids.
• SOC is crucial for topological phases and Majorana fermions, influencing band inversion and splitting.
• Understanding SOC's interplay with other quantum phenomena is key for advanced electronic applications.

Purpose of the Study:

• To investigate the combined effects of Zeeman splitting and spin-orbit coupling (SOC) on electron behavior.
• To explore the transport spectroscopy of Landau levels (LLs) in indium arsenide nanowires under magnetic fields.
• To elucidate the mechanism behind anomalous Landau level splitting observed in these systems.

Main Methods:

• Transport spectroscopy measurements were performed on indium arsenide nanowires.
• Landau levels (LLs) were analyzed under strong magnetic field conditions.
• The study focused on observing and characterizing the Zeeman splitting of LLs.

Main Results:

• Anomalous Zeeman splitting of Landau levels was observed.
• The splitting exhibited dependence on both the Landau level quantum number and electron spin.
• This anomalous splitting was attributed to the interplay between Zeeman splitting and SOC.

Conclusions:

• The interaction between Zeeman splitting and SOC leads to unique Landau level behavior in indium arsenide nanowires.
• Findings provide insights into generating spin-resolved chiral electron transport.
• This research suggests a novel approach for manipulating electron spin and orbital motion in nanoscale devices.