Coexistence of topological surface states and superconductivity in Dirac semimetal NiTe$_2$
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866910854665994240 |
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| author | He, Chen Zhao, Jian-Zhou Du, Mei Zhang, Luo-Zhao Zhang, Jia-Ying Yang, Kuo Yuan, Noah F. Q. Seliverstov, Aleksandr Janssens, Ewald Ge, Jun-Yi Li, Zhe |
| author_facet | He, Chen Zhao, Jian-Zhou Du, Mei Zhang, Luo-Zhao Zhang, Jia-Ying Yang, Kuo Yuan, Noah F. Q. Seliverstov, Aleksandr Janssens, Ewald Ge, Jun-Yi Li, Zhe |
| contents | The coexistence of topological bands around the Fermi level ($E_F$) and superconductivity provides a fundamental platform for exploring their interplay. However, few materials inherently display both properties. In this study, we demonstrate the coexistence of topological surface states at the $E_F$ and superconductivity in NiTe$_2$ single crystals, a material hitherto not recognized as superconducting. Quasiparticle interference measurements performed via scanning tunneling microscopy suggest the presence of topological surface states at the $E_F$, which is further corroborated by density functional theory simulations. Experimental evidence for superconductivity is provided via electronic transport measurements and specific heat capacity analyses. Our results suggest that NiTe$_2$ represents a promising platform for investigating the rich interplay between topological states and superconductivity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_01337 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Coexistence of topological surface states and superconductivity in Dirac semimetal NiTe$_2$ He, Chen Zhao, Jian-Zhou Du, Mei Zhang, Luo-Zhao Zhang, Jia-Ying Yang, Kuo Yuan, Noah F. Q. Seliverstov, Aleksandr Janssens, Ewald Ge, Jun-Yi Li, Zhe Superconductivity The coexistence of topological bands around the Fermi level ($E_F$) and superconductivity provides a fundamental platform for exploring their interplay. However, few materials inherently display both properties. In this study, we demonstrate the coexistence of topological surface states at the $E_F$ and superconductivity in NiTe$_2$ single crystals, a material hitherto not recognized as superconducting. Quasiparticle interference measurements performed via scanning tunneling microscopy suggest the presence of topological surface states at the $E_F$, which is further corroborated by density functional theory simulations. Experimental evidence for superconductivity is provided via electronic transport measurements and specific heat capacity analyses. Our results suggest that NiTe$_2$ represents a promising platform for investigating the rich interplay between topological states and superconductivity. |
| title | Coexistence of topological surface states and superconductivity in Dirac semimetal NiTe$_2$ |
| topic | Superconductivity |
| url | https://arxiv.org/abs/2503.01337 |