TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.19.5.135
TI  - Rashba spin-orbit coupling and nonlocal correlations in disordered 2D systems
PY  - 2025/11/24
UR  - https://www.scipost.org/SciPostPhys.19.5.135
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 19
IS  - 5
SP  - 135
A1  - Li, Yongtai
AU  - Jana, Gour
AU  - Ekuma, Chinedu E.
AB  - We present an extension of the dynamical cluster approximation (DCA) that incorporates Rashba spin-orbit coupling (SOC) to investigate the interplay between disorder, spin-orbit interaction, and nonlocal spatial correlations in disordered two-dimensional systems. By analyzing the average density of states, momentum-resolved self-energy, and return probability, we demonstrate how Rashba SOC and nonlocal correlations jointly modify single-particle properties and spin-dependent interference. The method captures key features of the symplectic universality class, including SOC-induced delocalization signatures at finite times. We benchmark the DCA results against those obtained from the numerically exact kernel polynomial method, finding good agreement. This validates the computationally efficient, mean-field-based DCA framework as a robust tool for exploring disorder, spin-orbit coupling, and nonlocal correlation effects in low-dimensional systems, and paves the way for simulating multiorbital and strongly correlated systems that were previously inaccessible due to computational limitations.
ER  -

@Article{10.21468/SciPostPhys.19.5.135,
	title={{Rashba spin-orbit coupling and nonlocal correlations in disordered 2D systems}},
	author={Yongtai Li and Gour Jana and Chinedu E. Ekuma},
	journal={SciPost Phys.},
	volume={19},
	pages={135},
	year={2025},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.19.5.135},
	url={https://scipost.org/10.21468/SciPostPhys.19.5.135},
}