Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

S Mozaffari, WR Meier, RP Madhogaria… - Physical Review B, 2024 - APS
Physical Review B, 2024APS
The recent discovery of a charge density (CDW) state in ScV 6 Sn 6 at T 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 …
The recent discovery of a charge density (CDW) state in at = 91 K offers new opportunities to understand the origins of electronic instabilities in topological kagome systems. By comparing to the isostructural non-CDW compound , we unravel interesting electrical transport properties in , above and below the charge-ordering temperature. We observed that by applying a magnetic field along the axis, the temperature behavior of the longitudinal resistivity in changes from metal-like to insulator-like above the CDW transition. We show that in the charge-ordered state follows the Fermi liquid behavior while above that, the resistivity varies sublinearly over a broad temperature range. The sublinear resistivity, which scales by is a common feature among other vanadium-containing kagome compounds exhibiting CDW states such as , and . By contrast, the sublinear behavior of the resistivity does not occur in . Finally, we show anomalous Hall-like behavior in below , which is absent in the Lu compound. Comparing the transport properties of and is valuable to highlight the impacts of the unusual CDW in the Sc compound.
American Physical Society
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