Spin-dependent conductance in gapped 8-Pmmn borophene-superlattice

Farhad Sattari; Soghra Mirershadi

doi:10.1038/s41598-025-12028-0

Spin-dependent conductance in gapped 8-Pmmn borophene-superlattice

Sci Rep. 2025 Jul 21;15(1):26441. doi: 10.1038/s41598-025-12028-0.

Authors

Farhad Sattari^{1

2}, Soghra Mirershadi³

Affiliations

¹ Department of Physics, Faculty of Sciences, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran. f_sattari@uma.ac.ir.
² Nanoscience and Nanotechnology Research Group, University of Mohaghegh Ardabili, Ardabil, Iran. f_sattari@uma.ac.ir.
³ Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran.

Abstract

The energy gap effect on the spin conductance and polarization of spin and valley in the 8-Pmmn borophene superlattice under Rashba interaction is studied. We show that the spin conductance in a superlattice based on the 8-Pmmn borophene can be easily tuned by the strength of Rashba interaction and the superlattice direction. Also, the energy gap is an important quantity to adjust the conductance with and without spin rotation. By adjusting the energy gap, electrons with a certain spin can be filtered. In addition, when the energy gap is greater than a threshold value, the conductance becomes zero for both electrons with and without spin flip. By adjusting the energy gap, superlattice direction, and Rashba strength the value and sign of polarization of spin and valley can be easily controlled.