Semiconductor-metal phase transition and emergent charge density waves in 1T-ZrX$_2$ (X = Se, Te) at the two-dimensional limit
| العنوان: | Semiconductor-metal phase transition and emergent charge density waves in 1T-ZrX$_2$ (X = Se, Te) at the two-dimensional limit |
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| المؤلفون: | Ming-Qiang Ren, Sha Han, Jia-Qi Fan, Li Wang, Pengdong Wang, Wei Ren, Kun Peng, Shujing Li, Shu-Ze Wang, Fa-Wei Zheng, Ping Zhang, Fangsen Li, Xucun Ma, Qi-Kun Xue, Can-Li Song |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Condensed Matter - Materials Science, Mechanical Engineering, Condensed Matter::Superconductivity, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, General Materials Science, Bioengineering, Condensed Matter::Strongly Correlated Electrons, General Chemistry, Condensed Matter Physics |
| الوصف: | Charge density wave (CDW) is a collective quantum phenomenon in metals and features a wave-like modulation of the conduction electron density. A microscopic understanding and experimental control of this many-body electronic state in atomically thin materials remain hot topics in materials physics. By means of material engineering, we realized a dimensionality and Zr intercalation induced semiconductor-metal phase transition in 1T-ZrX$_2$ (X = Se, Te) ultra-thin films, accompanied by a commensurate 2 $\times$ 2 CDW order. Furthermore, we observed a CDW energy gap up to 22 meV around the Fermi level. Fourier-transformed scanning tunneling microscopy and angle-resolved photoemission spectroscopy reveal that 1T-ZrX$_2$ films exhibit the simplest Fermi surface among the known CDW materials in TMDCs, consisting only of Zr 4d-derived elliptical electron conduction band at the corners of the Brillouin zone. 29 pages, 4 figures, 4 Supplementary notes |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::affca8f67969ff953e31b0f975c73686 http://arxiv.org/abs/2102.07915 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....affca8f67969ff953e31b0f975c73686 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |