Anomalous Hall effect and two-dimensional Fermi surfaces in the charge-density-wave state of kagome metal RbV<sub>3</sub>Sb<sub>5</sub>

Wang, Lingfei; Zhang, Wei; Wang, Zheyu; Poon, Tsz Fung; Wang, Wenyan; Tsang, Chun Wai; Xie, Jianyu; Zhou, Xuefeng; Zhao, Yusheng; Wang, Shanmin; Lai, Kwing To; Goh, Swee K.

doi:10.1088/2515-7639/acba46

Cited by 14 publications

(3 citation statements)

References 51 publications

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“…kagome compounds exhibiting CDW. In Fig.4(b) we show that the exponent n = 3/5 describes the ρ(T ) behavior of KV 3 Sb 57 , RbV 3 Sb 58 , and CsV 3 Sb 5 6 samples very well above the charge ordering temperature.…”

mentioning

confidence: 78%

“…The hexagonal 135 families of compounds (AV 3 Sb 5 with A= K, Rb, Cs) host curious CDWs and unconventional superconductivity tied to their vanadium kagome sheets [6][7][8][9][10][11] . Additionally, the normal states of the 135 families are identified as Z 2 topological metals with band inversion 6,10 , the CDW state shows a pair density wave 12 , nematic order 13 , and a large anomalous Hall response 14,15 in the absence of resolvable magnetic order 16 .…”

Section: Introductionmentioning

confidence: 99%

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Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Mozaffari

Mandrus

Meier

et al. 2023

Preprint

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The recent discovery of a charge density (CDW) state in ScV6Sn6 at TCDW = 91 K offers new opportunities to understand the origins of electronic instabilities in topological kagome systems. By comparing to the isostructural non-CDW compound LuV6Sn6, we unravel interesting electrical transport properties in ScV6Sn6, 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 ScV6Sn6 changes from metal-like to insulator-like above the CDW transition. We show that in the charge ordered state ScV6Sn6 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 T3/5 is a common feature among other vanadium-containing kagome compounds exhibiting CDW states such as KV3Sb5, RbV3Sb5, and CsV3Sb5. By contrast, the non-Fermi liquid behavior does not occur in LuV6Sn6. We explain the T3/5 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 ScV6Sn6 below TCDW, which is absent in the Lu compound. Comparing the transport properties of ScV6Sn6 and LuV6Sn6 is valuable to highlight the impacts of the unusual CDW in the Sc compound.

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mentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Mozaffari

Mandrus

Meier

et al. 2023

Preprint

View full text Add to dashboard Cite

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“…They exhibit a charge density wave (CDW) order which sets in at 80-110 K. In addition to CDW, superconductivity is observed below the transition temperature T c , which varies between ≃0.9 and ≃3.0 K for different alkali metals [1][2][3]. T c is further changed, reaching in some cases values as high as ≃7-8 K, either by doping [16] or application of pressure [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Resonant x-ray diffraction measurements in charge ordered kagome superconductors KV₃Sb₅ and RbV₃Sb₅

Scagnoli,

Riddiford,

Huang

et al. 2024

J. Phys.: Condens. Matter

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We report on (resonant) x-ray diffraction experiments on the normal state properties of kagome- lattice superconductors KV3Sb5 and RbV3Sb5. We have confirmed previous reports indicating that the charge density wave phase is characterized by a doubling of the unit cell in all three crystallographic directions. By monitoring the temperature dependence of Bragg peaks associated with the charge density wave phase, we ascertained that it develops gradually over several degrees, as opposed to CsV3Sb5, where the charge density wave peak intensity saturates promptly just below the charge density wave transition temperature. Diffraction measurements close to the V K edge and the Sb L1 edge show no sensitivity to inversion- or time-symmetry breaking, which are claimed to be associated with the onset of the charge density wave phase. Resonant diffraction intensity observed at the Sb L1 edge is associated with the anisotropy of the electron density of some of the Sb ions.

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The Impact of Hydrostatic Pressure on the Structural, Mechanical, Thermal, and Optoelectronic Characteristics of the RbV₃Sb₅ Kagome Compound: Ab initio Approach

Mondal,

Islam,

Khanom

et al. 2024

ChemistryOpen

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We studied the RbV3Sb5 kagome compound's structural, mechanical, thermal, and optoelectronic properties. Mulliken and Hirshfeld population analysis found ionic and covalent connections in RbV3Sb5. The Born stability criterion shows that pure RbV3Sb5 is mechanically stable. The precise measurement of 3.96 indicates that our sample has higher machinability at 20 GPa. Low anticipated hardness of RbV3Sb5 suggests it can be used as a soft solid lubricant. Hardness ratings rise with pressure, however there are exceptions. Pressure causes large nonmonotonic changes in RbV3Sb5′s anisotropic characteristics. A comparable 20 GPa Zener anisotropic value, RbV3Sb5 has the highest. The structure's projected Debye temperature at 0 GPa is 284.39 K, indicating softness. Dispersion curves with negative frequencies suggest ground state structural dynamical instability. The structure has no negative‐energy phonon branches under 10 GPa stress. From band structure and density of state analysis, the structure behaves metallically under hydrostatic pressure. Also, the structure has maximal ultra‐violet conductivity and absorption. The absorption coefficient, conductivity, and loss function plots show uniform patterns at all pressures. As pressure rises, these graphs’ peaks blue shift.

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Anomalous Hall effect and two-dimensional Fermi surfaces in the charge-density-wave state of kagome metal RbV₃Sb₅

Cited by 14 publications

References 51 publications

Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Resonant x-ray diffraction measurements in charge ordered kagome superconductors KV₃Sb₅ and RbV₃Sb₅

The Impact of Hydrostatic Pressure on the Structural, Mechanical, Thermal, and Optoelectronic Characteristics of the RbV₃Sb₅ Kagome Compound: Ab initio Approach

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Anomalous Hall effect and two-dimensional Fermi surfaces in the charge-density-wave state of kagome metal RbV3Sb5

Cited by 14 publications

References 51 publications

Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Universal sublinear resistivity in vanadium kagome materials hosting charge density waves

Resonant x-ray diffraction measurements in charge ordered kagome superconductors KV3Sb5 and RbV3Sb5

The Impact of Hydrostatic Pressure on the Structural, Mechanical, Thermal, and Optoelectronic Characteristics of the RbV3Sb5 Kagome Compound: Ab initio Approach

Contact Info

Product

Resources

About

Anomalous Hall effect and two-dimensional Fermi surfaces in the charge-density-wave state of kagome metal RbV₃Sb₅

Resonant x-ray diffraction measurements in charge ordered kagome superconductors KV₃Sb₅ and RbV₃Sb₅

The Impact of Hydrostatic Pressure on the Structural, Mechanical, Thermal, and Optoelectronic Characteristics of the RbV₃Sb₅ Kagome Compound: Ab initio Approach