Microscopic Fingerprint of Chiral Superconductivity
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909704406433792 |
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| author | Wu, Xuefeng Hao, Xuan Chen, Zhuo Cai, Yuchang Wu, Minghao Chen, Congrun Wang, Kedong Ming, Fangfei Johnston, Steven Zhang, Rui-Xing Weitering, Hanno H. |
| author_facet | Wu, Xuefeng Hao, Xuan Chen, Zhuo Cai, Yuchang Wu, Minghao Chen, Congrun Wang, Kedong Ming, Fangfei Johnston, Steven Zhang, Rui-Xing Weitering, Hanno H. |
| contents | Chiral superconductors have long been theorized to break time-reversal symmetry and support exotic topological features such as Majorana modes and spontaneous edge currents, promising ingredients for quantum technologies. Although several unconventional superconductors may exhibit time-reversal symmetry breaking, clear microscopic evidence of chiral pairing has remained out of reach. In this work, we demonstrate direct real-space signatures of chiral superconductivity in a single atomic layer of tin on Si(111). Using quasiparticle interference imaging, we detected symmetry-locked nodal and antinodal points in the Bogoliubov quasiparticle wavefunction, tightly bound to atomic point defects in the tin lattice. These nodal features, along with their surrounding texture, form a distinct real-space pattern exhibiting a clear and exclusive hallmark of chiral superconductivity. Our findings, reinforced by analytical theory and numerical simulations, offer unambiguous evidence of chiral pairing in a two-dimensional material. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_18693 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Microscopic Fingerprint of Chiral Superconductivity Wu, Xuefeng Hao, Xuan Chen, Zhuo Cai, Yuchang Wu, Minghao Chen, Congrun Wang, Kedong Ming, Fangfei Johnston, Steven Zhang, Rui-Xing Weitering, Hanno H. Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons Chiral superconductors have long been theorized to break time-reversal symmetry and support exotic topological features such as Majorana modes and spontaneous edge currents, promising ingredients for quantum technologies. Although several unconventional superconductors may exhibit time-reversal symmetry breaking, clear microscopic evidence of chiral pairing has remained out of reach. In this work, we demonstrate direct real-space signatures of chiral superconductivity in a single atomic layer of tin on Si(111). Using quasiparticle interference imaging, we detected symmetry-locked nodal and antinodal points in the Bogoliubov quasiparticle wavefunction, tightly bound to atomic point defects in the tin lattice. These nodal features, along with their surrounding texture, form a distinct real-space pattern exhibiting a clear and exclusive hallmark of chiral superconductivity. Our findings, reinforced by analytical theory and numerical simulations, offer unambiguous evidence of chiral pairing in a two-dimensional material. |
| title | Microscopic Fingerprint of Chiral Superconductivity |
| topic | Superconductivity Mesoscale and Nanoscale Physics Materials Science Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2507.18693 |