Quantum Boltzmann equation for non-reversible transient transport in Rashba-Landau coupled low-dimensional GeTe systems

Rashba spin-orbit coupling and quantum-interference effect for a pair of spin-correlated electrons in their tunneling and reflection under a step potential

“…9 In recent years, there have been a lot of interests in the research field dealing with the effect of SOI or the Rashba effect, on the electron transport and optical properties of low-dimensional semiconductor electronic systems. [10][11][12][13][14][15][16][17] Such an SOI results from the asymmetry in a confining potential for an electron or a hole gas at the interface of a hetero-structure. Particularly, some of these studies aim at identifying potential spintronic-device applications, e.g., a spin-based transistor, in which the spin-current can be manipulated purely by electrical means (i.e., spin-Hall effect) 18,19,31 .…”

“…31 For nonferromagnetic GeTe with a giant Rashba parameter, one expects that a Zeeman gap will open at the Dirac point under a magnetic field. 32,33 In general, the Fermi surface of spin-orbit coupled materials consists of two concentric, spin non-degenerate hyper-surfaces separated in momentum space. 34 In the specific case of Rashba SOI materials, these two Rashba bands have opposite chiralities with the angle between the spin and momentum vectors locked and reversed with respect to each other.…”