Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons
Abstract Recently, monolayer CoSb/SrTiO3 has been proposed as a candidate harboring interfacial superconductivity in analogy with monolayer FeSe/SrTiO3. Experimentally, while the CoSb-based compounds manifesting as nanowires and thin films have been realized on SrTiO3 substrates, serving as a rich p...
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Nature Portfolio
2021
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oai:doaj.org-article:f32f6f45aa214c36ba12a4e2225fa5522021-12-02T15:15:24ZElectronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons10.1038/s41535-021-00381-y2397-4648https://doaj.org/article/f32f6f45aa214c36ba12a4e2225fa5522021-09-01T00:00:00Zhttps://doi.org/10.1038/s41535-021-00381-yhttps://doaj.org/toc/2397-4648Abstract Recently, monolayer CoSb/SrTiO3 has been proposed as a candidate harboring interfacial superconductivity in analogy with monolayer FeSe/SrTiO3. Experimentally, while the CoSb-based compounds manifesting as nanowires and thin films have been realized on SrTiO3 substrates, serving as a rich playground, their electronic structures are still unknown and yet to be resolved. Here, we have fabricated CoSb1−x nanoribbons with quasi-one-dimensional stripes on SrTiO3(001) substrates using molecular beam epitaxy and investigated the electronic structure by in situ angle-resolved photoemission spectroscopy. Straight Fermi surfaces without lateral dispersions are observed. CoSb1−x /SrTiO3 is slightly hole doped, where the interfacial charge transfer is opposite to that in monolayer FeSe/SrTiO3. The spectral weight near the Fermi level exhibits power-law-like suppression and obeys a universal temperature scaling, serving as the signature of Tomonaga–Luttinger liquid (TLL) state. The obtained TLL parameter of ~0.21 shows the underlying strong correlations. Our results not only suggest CoSb1−x nanoribbon as a representative TLL system but also provide clues for further investigations on the CoSb-related interface.Rui LouMinyinan LeiWenjun DingWentao YangXiaoyang ChenRan TaoShuyue DingXiaoping ShenYajun YanPing CuiHaichao XuRui PengTong ZhangZhenyu ZhangDonglai FengNature PortfolioarticleMaterials of engineering and construction. Mechanics of materialsTA401-492Atomic physics. Constitution and properties of matterQC170-197ENnpj Quantum Materials, Vol 6, Iss 1, Pp 1-7 (2021) |
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Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 |
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Materials of engineering and construction. Mechanics of materials TA401-492 Atomic physics. Constitution and properties of matter QC170-197 Rui Lou Minyinan Lei Wenjun Ding Wentao Yang Xiaoyang Chen Ran Tao Shuyue Ding Xiaoping Shen Yajun Yan Ping Cui Haichao Xu Rui Peng Tong Zhang Zhenyu Zhang Donglai Feng Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| description |
Abstract Recently, monolayer CoSb/SrTiO3 has been proposed as a candidate harboring interfacial superconductivity in analogy with monolayer FeSe/SrTiO3. Experimentally, while the CoSb-based compounds manifesting as nanowires and thin films have been realized on SrTiO3 substrates, serving as a rich playground, their electronic structures are still unknown and yet to be resolved. Here, we have fabricated CoSb1−x nanoribbons with quasi-one-dimensional stripes on SrTiO3(001) substrates using molecular beam epitaxy and investigated the electronic structure by in situ angle-resolved photoemission spectroscopy. Straight Fermi surfaces without lateral dispersions are observed. CoSb1−x /SrTiO3 is slightly hole doped, where the interfacial charge transfer is opposite to that in monolayer FeSe/SrTiO3. The spectral weight near the Fermi level exhibits power-law-like suppression and obeys a universal temperature scaling, serving as the signature of Tomonaga–Luttinger liquid (TLL) state. The obtained TLL parameter of ~0.21 shows the underlying strong correlations. Our results not only suggest CoSb1−x nanoribbon as a representative TLL system but also provide clues for further investigations on the CoSb-related interface. |
| format |
article |
| author |
Rui Lou Minyinan Lei Wenjun Ding Wentao Yang Xiaoyang Chen Ran Tao Shuyue Ding Xiaoping Shen Yajun Yan Ping Cui Haichao Xu Rui Peng Tong Zhang Zhenyu Zhang Donglai Feng |
| author_facet |
Rui Lou Minyinan Lei Wenjun Ding Wentao Yang Xiaoyang Chen Ran Tao Shuyue Ding Xiaoping Shen Yajun Yan Ping Cui Haichao Xu Rui Peng Tong Zhang Zhenyu Zhang Donglai Feng |
| author_sort |
Rui Lou |
| title |
Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| title_short |
Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| title_full |
Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| title_fullStr |
Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| title_full_unstemmed |
Electronic structure and signature of Tomonaga–Luttinger liquid state in epitaxial CoSb1−x nanoribbons |
| title_sort |
electronic structure and signature of tomonaga–luttinger liquid state in epitaxial cosb1−x nanoribbons |
| publisher |
Nature Portfolio |
| publishDate |
2021 |
| url |
https://doaj.org/article/f32f6f45aa214c36ba12a4e2225fa552 |
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