Spin-Independent Dissipation Induces Emergent Spin Mobility Polarization in Donor-Double-Stranded DNA-Acceptor Systems

Abstract

Despite extensive experiments, chiral-induced spin selectivity (CISS) remains debated. Using a donor-double-stranded DNA-acceptor model and Lindblad equation, we define spin mobility polarization via spin-resolved mean-square displacement and fix relaxation on a turnover plateau. The spin-independent relaxation locks the transient asymmetry from helical spin-orbit coupling (SOC) into a steady polarization. Weak SOC then yields an unexpected "one-enhanced, one-suppressed" pattern relative to the SOC-free case, with its origin identified. Flipping the helix exchanges spins. The work defines mobility polarization as a probe and gives a generic dissipation-driven mechanism for CISS.