Anomalous Magnetoresistance beyond the Jullière Model for Spin Selectivity in Chiral Molecules
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908689627086848 |
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| author | Zhang, Tian-Yi Mao, Yue Liu, Peng-Yi Guo, Ai-Min Sun, Qing-Feng |
| author_facet | Zhang, Tian-Yi Mao, Yue Liu, Peng-Yi Guo, Ai-Min Sun, Qing-Feng |
| contents | The issue of anomalous high magnetoresistance, beyond the Jullière model, observed in nonmagnetic electrode-chiral molecular-ferromagnetic electrode devices has puzzled the community for a long time. Here, by considering the magnetic proximity effect which shifts the nonmagnetic-ferromagnetic interface toward chiral molecules, we show the anomalous high magnetoresistance beyond the spin polarization in ferromagnetic electrodes even in the very weak spin-orbit coupling. Our results are in excellent agreement with the experiments, demonstrating that the spin-orbit coupling plays a fundamental role in chiral-induced spin selectivity and the magnetic proximity effect can dramatically enhance the magnetoresistance. These results elucidate the interaction between chiral molecules and ferromagnetic electrodes and facilitate the design of chiral-based spintronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_05588 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Anomalous Magnetoresistance beyond the Jullière Model for Spin Selectivity in Chiral Molecules Zhang, Tian-Yi Mao, Yue Liu, Peng-Yi Guo, Ai-Min Sun, Qing-Feng Chemical Physics Mesoscale and Nanoscale Physics The issue of anomalous high magnetoresistance, beyond the Jullière model, observed in nonmagnetic electrode-chiral molecular-ferromagnetic electrode devices has puzzled the community for a long time. Here, by considering the magnetic proximity effect which shifts the nonmagnetic-ferromagnetic interface toward chiral molecules, we show the anomalous high magnetoresistance beyond the spin polarization in ferromagnetic electrodes even in the very weak spin-orbit coupling. Our results are in excellent agreement with the experiments, demonstrating that the spin-orbit coupling plays a fundamental role in chiral-induced spin selectivity and the magnetic proximity effect can dramatically enhance the magnetoresistance. These results elucidate the interaction between chiral molecules and ferromagnetic electrodes and facilitate the design of chiral-based spintronic devices. |
| title | Anomalous Magnetoresistance beyond the Jullière Model for Spin Selectivity in Chiral Molecules |
| topic | Chemical Physics Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2509.05588 |