Characterization of non-magnetic fractional quantization in 1D InGaAs and InAs quantum wires

The search for new quantum states in low dimensional systems is of great importance for spintronics and quantum technology device applications. Recently, non-magnetic fractional conductance states have been observed in strained-Ge [1] and GaAs [2] 1D ballistic quantum wires. Even though these materials have great characteristics, large g-factor heterostructures for easier manipulation of the electron’s spin are desired. Consequently, the investigation of 1D InGaAs [3] and InAs quantum wires is of considerable significance. In this work, we present non-magnetic fractional conductance states in these large g-factor materials, and a study of their properties in different confinement and magnetic field configurations. Further analysis of the spin properties of these electrons will be carried out via transverse electron focusing.



[1] Y Gul et al 2018 J. Phys.: Condens. Matter 30 09LT01

[2] S Kumar et al 2019 Phys. Rev. Lett. 122, 086803

[3] L Liu et al (Awaiting publication) Appl. Phys. Lett.