Resonantly enhanced photoemission from topological surface states in MnBi$_6$Te$_{10}$
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866915500955533312 |
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| author | Majchrzak, Paulina Jones, Alfred J. H. Volckaert, Klara Pan, Xing-Chen Hofmann, Philip Chen, Yong P. Miwa, Jill A. Ulstrup, Søren |
| author_facet | Majchrzak, Paulina Jones, Alfred J. H. Volckaert, Klara Pan, Xing-Chen Hofmann, Philip Chen, Yong P. Miwa, Jill A. Ulstrup, Søren |
| contents | The dispersion of topological surface bands in MnBi$_2$Te$_4$-based magnetic topological insulator heterostructures is strongly affected by band hybridization and is spatially inhomogeneous due to varying surface layer terminations on microscopic length scales. Here, we apply micro-focused angle-resolved photoemission spectroscopy with tunable photon energy from 18 to 30 eV to distinguish bulk valence and conduction bands from surface bands on the three surface terminations of MnBi$_6$Te$_10$. We observe a strong enhancement of photoemission intensity from the topological surface bands at the Bi O4 absorption edge, which is exploited to visualize a gapless Dirac cone on the MnBi$_2$Te$_4$-terminated surface and varying degrees of hybridization effects in the surface bands on the two distinct Bi$_2$Te$_3$-terminated surfaces. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2509_14714 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Resonantly enhanced photoemission from topological surface states in MnBi$_6$Te$_{10}$ Majchrzak, Paulina Jones, Alfred J. H. Volckaert, Klara Pan, Xing-Chen Hofmann, Philip Chen, Yong P. Miwa, Jill A. Ulstrup, Søren Materials Science The dispersion of topological surface bands in MnBi$_2$Te$_4$-based magnetic topological insulator heterostructures is strongly affected by band hybridization and is spatially inhomogeneous due to varying surface layer terminations on microscopic length scales. Here, we apply micro-focused angle-resolved photoemission spectroscopy with tunable photon energy from 18 to 30 eV to distinguish bulk valence and conduction bands from surface bands on the three surface terminations of MnBi$_6$Te$_10$. We observe a strong enhancement of photoemission intensity from the topological surface bands at the Bi O4 absorption edge, which is exploited to visualize a gapless Dirac cone on the MnBi$_2$Te$_4$-terminated surface and varying degrees of hybridization effects in the surface bands on the two distinct Bi$_2$Te$_3$-terminated surfaces. |
| title | Resonantly enhanced photoemission from topological surface states in MnBi$_6$Te$_{10}$ |
| topic | Materials Science |
| url | https://arxiv.org/abs/2509.14714 |