Release Summary
Recent studies have revealed that electrons passing through chiral molecules exhibit significant spin polarization—a phenomenon known as Chirality-Induced Spin Selectivity (CISS). This effect stems from a nontrivial coupling between electron motion and spin within chiral structures, yet quantifying it remains challenging.
To address this, researchers at the Institute for Molecular Science (IMS) /SOKENDAI investigated an organic superconductor with chiral symmetry. They focused on nonreciprocity related to spin–orbit coupling and observed an exceptionally a large nonreciprocal transport in the superconducting state, far exceeding theoretical predictions. Remarkably, this was found in an organic material with inherently weak spin–orbit coupling, suggesting that chirality significantly enhances charge current–spin coupling with inducing mixed spin-triplet Cooper pairs.
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