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Chirality Drives Massive Charge Rectification in Superconductors
- Researchers have uncovered insights into electron behavior in chiral organic superconductors, revealing a nonreciprocal transport phenomenon linked to the Chirality-Induced Spin Selectivity effect.
- The chiral organic superconductor κ-(BEDT-TTF)₂Cu(NCS)₂ exhibits a large nonreciprocal transport magnitude despite its composition of light elements, challenging existing theories.
- Chirality induces a coupling between an electron's spin and momentum, contributing to the CISS effect, which had previously posed challenges for measurement in bulk materials.
- Experiments on thin-film devices of κ-NCS showed a significant nonreciprocal signal surpassing that of inorganic superconductors, indicating a unique mechanism rooted in chirality.
- Theoretical advancements propose that chirality influences a mixing between spin-singlet and spin-triplet Cooper pairs, enhancing spin-orbit coupling interactions beyond standard predictions.
- The chiral organic material κ-NCS demonstrated a superconducting diode effect with an efficiency comparable to inorganic superconductors, hinting at practical applications in low-energy superconducting components.
- The study underscores the role of symmetry and molecular structure in manipulating spin-related quantum phenomena, opening avenues for advanced spintronic applications and quantum devices.
- The research provides a robust framework for understanding the CISS effect in organic molecules and offers new possibilities for dissipationless spin current channels and scalable quantum bits.
- The integration of chirality-inspired mechanisms in devices could lead to energy-efficient circuits, signal rectifiers, and spintronic components for quantum computing and electronic engineering.
- Published in PhysRev Research, this study challenges conventional limits of spin-charge interactions, highlighting the potential of chiral superconductors in reshaping electron transport in organic materials.
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