Universal sublinear resistivity in vanadium kagome materials hosting charge density waves
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arXiv
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866911953879826432 |
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| author | Mozaffari, Shirin Meier, William R. Madhogaria, Richa P. Peshcherenko, Nikolai Kang, Seoung-Hun Villanova, John W. Arachchige, Hasitha W. Suriya Zheng, Guoxin Zhu, Yuan Chen, Kuan-Wen Jenkins, Kaila Zhang, Dechen Chan, Aaron Li, Lu Yoon, Mina Zhang, Yang Mandrus, David G. |
| author_facet | Mozaffari, Shirin Meier, William R. Madhogaria, Richa P. Peshcherenko, Nikolai Kang, Seoung-Hun Villanova, John W. Arachchige, Hasitha W. Suriya Zheng, Guoxin Zhu, Yuan Chen, Kuan-Wen Jenkins, Kaila Zhang, Dechen Chan, Aaron Li, Lu Yoon, Mina Zhang, Yang Mandrus, David G. |
| contents | The recent discovery of a charge density (CDW) state in ScV$_6$Sn$_6$ at $T_{\textrm{CDW}}$ = 91 K offers new opportunities to understand the origins of electronic instabilities in topological kagome systems. By comparing to the isostructural non-CDW compound LuV$_6$Sn$_6$, we unravel interesting electrical transport properties in ScV$_6$Sn$_6$, above and below the charge ordering temperature. We observed that by applying a magnetic field along the $a$ axis, the temperature behavior of the longitudinal resistivity in ScV$_6$Sn$_6$ changes from metal-like to insulator-like above the CDW transition. We show that in the charge ordered state ScV$_6$Sn$_6$ follows the Fermi liquid behavior while above that, it transforms into a non-Fermi liquid phase in which the resistivity varies sublinearly over a broad temperature range. The sublinear resistivity, which scales by $T^{3/5}$ is a common feature among other vanadium-containing kagome compounds exhibiting CDW states such as KV$_3$Sb$_5$, RbV$_3$Sb$_5$, and CsV$_3$Sb$_5$. By contrast, the non-Fermi liquid behavior does not occur in LuV$_6$Sn$_6$. We explain the $T^{3/5}$ universal scaling behavior from the Coulomb scattering between Dirac electrons and Van Hove singularities; common features in the electronic structure of kagome materials. Finally, we show anomalous Hall-like behavior in ScV$_6$Sn$_6$ below $T_{\textrm{CDW}}$, which is absent in the Lu compound. Comparing the transport properties of ScV$_6$Sn$_6$ and LuV$_6$Sn$_6$ is valuable to highlight the impacts of the unusual CDW in the Sc compound. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2305_02393 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Universal sublinear resistivity in vanadium kagome materials hosting charge density waves Mozaffari, Shirin Meier, William R. Madhogaria, Richa P. Peshcherenko, Nikolai Kang, Seoung-Hun Villanova, John W. Arachchige, Hasitha W. Suriya Zheng, Guoxin Zhu, Yuan Chen, Kuan-Wen Jenkins, Kaila Zhang, Dechen Chan, Aaron Li, Lu Yoon, Mina Zhang, Yang Mandrus, David G. Strongly Correlated Electrons The recent discovery of a charge density (CDW) state in ScV$_6$Sn$_6$ at $T_{\textrm{CDW}}$ = 91 K offers new opportunities to understand the origins of electronic instabilities in topological kagome systems. By comparing to the isostructural non-CDW compound LuV$_6$Sn$_6$, we unravel interesting electrical transport properties in ScV$_6$Sn$_6$, above and below the charge ordering temperature. We observed that by applying a magnetic field along the $a$ axis, the temperature behavior of the longitudinal resistivity in ScV$_6$Sn$_6$ changes from metal-like to insulator-like above the CDW transition. We show that in the charge ordered state ScV$_6$Sn$_6$ follows the Fermi liquid behavior while above that, it transforms into a non-Fermi liquid phase in which the resistivity varies sublinearly over a broad temperature range. The sublinear resistivity, which scales by $T^{3/5}$ is a common feature among other vanadium-containing kagome compounds exhibiting CDW states such as KV$_3$Sb$_5$, RbV$_3$Sb$_5$, and CsV$_3$Sb$_5$. By contrast, the non-Fermi liquid behavior does not occur in LuV$_6$Sn$_6$. We explain the $T^{3/5}$ universal scaling behavior from the Coulomb scattering between Dirac electrons and Van Hove singularities; common features in the electronic structure of kagome materials. Finally, we show anomalous Hall-like behavior in ScV$_6$Sn$_6$ below $T_{\textrm{CDW}}$, which is absent in the Lu compound. Comparing the transport properties of ScV$_6$Sn$_6$ and LuV$_6$Sn$_6$ is valuable to highlight the impacts of the unusual CDW in the Sc compound. |
| title | Universal sublinear resistivity in vanadium kagome materials hosting charge density waves |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2305.02393 |