Interface-Induced Superconductivity in Magnetic Topological Insulator-Iron Chalcogenide Heterostructures
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arXiv
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| Format: | Preprint |
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2023
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| author | Yi, Hemian Zhao, Yi-Fan Chan, Ying-Ting Cai, Jiaqi Mei, Ruobing Wu, Xianxin Yan, Zi-Jie Zhou, Ling-Jie Zhang, Ruoxi Wang, Zihao Paolini, Stephen Xiao, Run Wang, Ke Richardella, Anthony R. Singleton, John Winter, Laurel E. Prokscha, Thomas Salman, Zaher Suter, Andreas Balakrishnan, Purnima P. Grutter, Alexander J. Chan, Moses H. W. Samarth, Nitin Xu, Xiaodong Wu, Weida Liu, Chao-Xing Chang, Cui-Zu |
| author_facet | Yi, Hemian Zhao, Yi-Fan Chan, Ying-Ting Cai, Jiaqi Mei, Ruobing Wu, Xianxin Yan, Zi-Jie Zhou, Ling-Jie Zhang, Ruoxi Wang, Zihao Paolini, Stephen Xiao, Run Wang, Ke Richardella, Anthony R. Singleton, John Winter, Laurel E. Prokscha, Thomas Salman, Zaher Suter, Andreas Balakrishnan, Purnima P. Grutter, Alexander J. Chan, Moses H. W. Samarth, Nitin Xu, Xiaodong Wu, Weida Liu, Chao-Xing Chang, Cui-Zu |
| contents | When two different electronic materials are brought together, the resultant interface often shows unexpected quantum phenomena, including interfacial superconductivity and Fu-Kane topological superconductivity (TSC). Here, we use molecular beam epitaxy (MBE) to synthesize heterostructures formed by stacking together two magnetic materials, a ferromagnetic topological insulator (TI) and an antiferromagnetic iron chalcogenide (FeTe). We discover emergent interface-induced superconductivity in these heterostructures and demonstrate the trifecta occurrence of superconductivity, ferromagnetism, and topological band structure in the magnetic TI layer, the three essential ingredients of chiral TSC. The unusual coexistence of ferromagnetism and superconductivity can be attributed to the high upper critical magnetic field that exceeds the Pauli paramagnetic limit for conventional superconductors at low temperatures. The magnetic TI/FeTe heterostructures with robust superconductivity and atomically sharp interfaces provide an ideal wafer-scale platform for the exploration of chiral TSC and Majorana physics, constituting an important step toward scalable topological quantum computation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_04353 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Interface-Induced Superconductivity in Magnetic Topological Insulator-Iron Chalcogenide Heterostructures Yi, Hemian Zhao, Yi-Fan Chan, Ying-Ting Cai, Jiaqi Mei, Ruobing Wu, Xianxin Yan, Zi-Jie Zhou, Ling-Jie Zhang, Ruoxi Wang, Zihao Paolini, Stephen Xiao, Run Wang, Ke Richardella, Anthony R. Singleton, John Winter, Laurel E. Prokscha, Thomas Salman, Zaher Suter, Andreas Balakrishnan, Purnima P. Grutter, Alexander J. Chan, Moses H. W. Samarth, Nitin Xu, Xiaodong Wu, Weida Liu, Chao-Xing Chang, Cui-Zu Mesoscale and Nanoscale Physics Materials Science Superconductivity When two different electronic materials are brought together, the resultant interface often shows unexpected quantum phenomena, including interfacial superconductivity and Fu-Kane topological superconductivity (TSC). Here, we use molecular beam epitaxy (MBE) to synthesize heterostructures formed by stacking together two magnetic materials, a ferromagnetic topological insulator (TI) and an antiferromagnetic iron chalcogenide (FeTe). We discover emergent interface-induced superconductivity in these heterostructures and demonstrate the trifecta occurrence of superconductivity, ferromagnetism, and topological band structure in the magnetic TI layer, the three essential ingredients of chiral TSC. The unusual coexistence of ferromagnetism and superconductivity can be attributed to the high upper critical magnetic field that exceeds the Pauli paramagnetic limit for conventional superconductors at low temperatures. The magnetic TI/FeTe heterostructures with robust superconductivity and atomically sharp interfaces provide an ideal wafer-scale platform for the exploration of chiral TSC and Majorana physics, constituting an important step toward scalable topological quantum computation. |
| title | Interface-Induced Superconductivity in Magnetic Topological Insulator-Iron Chalcogenide Heterostructures |
| topic | Mesoscale and Nanoscale Physics Materials Science Superconductivity |
| url | https://arxiv.org/abs/2312.04353 |