Interaction Enhanced Chirality Induced Spin Selectivity
ORAL
Abstract
Electron transport through chiral media shows a strong correlation between structural chirality and spin polarization, known as chirality induced spin selectivity (CISS). Despite the weak intrinsic spin-orbit coupling (SOC) of chiral systems composed of light elements, experiments report unexpectedly high spin polarization. To address this, we develop a theoretical framework that incorporates nearest-neighbor electron interactions within a self-consistent mean-field approach. We show that these interactions give rise to an emergent spin-polarized transport channel, enhancing spin selectivity even with weak SOC. This study highlights how electron-electron correlations can bridge structural chirality and spin-dependent transport, providing a microscopic mechanism for the enhanced spin polarization observed in CISS.
*The work is supported at Los Alamos National Laboratory (LANL) which is operated by Triad National Security, LLC, for the National Nuclear Security Administration of U.S. Department of Energy (Contract No. 89233218CNA000001). We gratefully acknowledge the support of the U.S. Department of Energy through the LANL/LDRD Program and the Center for Non-Linear Studies.
–
Presenters
-
Wonjune Choi
- Los Alamos National Laboratory (LANL)