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| Main Authors: | , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.23656 |
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| _version_ | 1866909715067305984 |
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| author | Matsuzaka, Mizuki Kashima, Kotaro Terai, Koki Ueda, Takumi Miyamoto, Ryunosuke Yamamoto, Takashi Sambe, Kohei Akutagawa, Tomoyuki Kaiju, Hideo |
| author_facet | Matsuzaka, Mizuki Kashima, Kotaro Terai, Koki Ueda, Takumi Miyamoto, Ryunosuke Yamamoto, Takashi Sambe, Kohei Akutagawa, Tomoyuki Kaiju, Hideo |
| contents | Recently, chirality-induced spin selectivity (CISS) has been observed in chiral molecules and is attractive for application in magnetoresistance (MR) devices. In this study, we fabricate CISS-based nanodevices consisting of chiral molecules sandwiched between Ni78Fe22 and Au electrodes. Prior to device fabrication, we have synthesized the chiral molecule N-(3S)-3,7-dimethyloctyl[1]benzothieno[3,2-b]benzothiophene-2-carboxyamide (S-BTBT-CONHR) and established a method for fabricating nanodevice electrodes. We have successfully observed a high degree of spin selectivity in S-BTBT-CONHR thin films using magnetic conductive atomic force microscopy (mc-AFM). By combining chiral molecules with our advanced nanofabrication technique, we have successfully fabricated Au/S-BTBT-CONHR/Ni78Fe22 nanodevices and observed the MR effect in the fabricated devices under a low magnetic field at room temperature. These MR curves correspond to the magnetization states of the Ni78Fe22 electrode, indicating that the CISS-based MR effect is successfully observed in the nanodevices under a low magnetic field. This study can lead to the development of CISS-based MR devices under low magnetic fields and provide new insights into the CISS effect mechanism on devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_23656 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Magnetoresistance effect based on spin-selective transport in nanodevices using chiral molecules Matsuzaka, Mizuki Kashima, Kotaro Terai, Koki Ueda, Takumi Miyamoto, Ryunosuke Yamamoto, Takashi Sambe, Kohei Akutagawa, Tomoyuki Kaiju, Hideo Applied Physics Recently, chirality-induced spin selectivity (CISS) has been observed in chiral molecules and is attractive for application in magnetoresistance (MR) devices. In this study, we fabricate CISS-based nanodevices consisting of chiral molecules sandwiched between Ni78Fe22 and Au electrodes. Prior to device fabrication, we have synthesized the chiral molecule N-(3S)-3,7-dimethyloctyl[1]benzothieno[3,2-b]benzothiophene-2-carboxyamide (S-BTBT-CONHR) and established a method for fabricating nanodevice electrodes. We have successfully observed a high degree of spin selectivity in S-BTBT-CONHR thin films using magnetic conductive atomic force microscopy (mc-AFM). By combining chiral molecules with our advanced nanofabrication technique, we have successfully fabricated Au/S-BTBT-CONHR/Ni78Fe22 nanodevices and observed the MR effect in the fabricated devices under a low magnetic field at room temperature. These MR curves correspond to the magnetization states of the Ni78Fe22 electrode, indicating that the CISS-based MR effect is successfully observed in the nanodevices under a low magnetic field. This study can lead to the development of CISS-based MR devices under low magnetic fields and provide new insights into the CISS effect mechanism on devices. |
| title | Magnetoresistance effect based on spin-selective transport in nanodevices using chiral molecules |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2506.23656 |