Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5

Graham, J. N.; Mielke III, C.; Das, D.; Morresi, T.; Sazgari, V.; Suter, A.; Prokscha, T.; Deng, H.; Khasanov, R.; Wilson, S. D.; Salinas, A. C.; Martins, M. M.; Zhong, Y.; Okazaki, K.; Wang, Z.; Hasan, M. Z.; Fischer, M. H.; Neupert, T.; Yin, J. -X.; Sanna, S.; Luetkens, H.; Salman, Z.; Bonfà, P.; Guguchia, Z.

doi:10.1038/s41467-024-52688-6

Nat Commun

2024

DOI: 10.1038/s41467-024-52688-6

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Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5

J. N. Graham,

C. Mielke III,

D. Das

et al.

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Tuning charge density wave of kagome metal ScV₆Sn₆

Yi,

Feng,

Kumar

et al. 2024

New J. Phys.

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Compounds with a kagome lattice exhibit intriguing properties and the charge density wave (CDW) adds an additional layer of interest to research on them. In this study, we investigate the temperature and magnetic field dependent electrical properties under a chemical substitution and hydrostatic pressure of ScV6Sn6, a non-magnetic charge density wave (CDW) compound. Substituting 5 % Cr at the V site or applying 1.5 GPa of pressure shifts the CDW to 50 K from 92 K. This shift is attributed to the movement of the imaginary phonon band, as revealed by the phonon dispersion relation. The longitudinal and Hall resistivities respond differently under these stimuli. The magnetoresistance (MR) maintains its quasilinear behavior under pressure, but it becomes quadratic after Cr substitution. The anomalous Hall-like behavior of the parent compound persists up to the respective CDW transition under pressure, after which it sharply declines. In contrast, the nonlinear Hall resistivity of Cr substituted compounds follows a two-band model and originates from the multi carrier effect. These results clearly highlight the role of phonon contributions in the CDW transition and call for further investigation into the origin of the anomalous Hall-like behavior in the parent compound.

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Tuning charge density wave of kagome metal ScV₆Sn₆

Yi,

Feng,

Kumar

et al. 2024

New J. Phys.

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Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5

Cited by 1 publication

References 61 publications

Tuning charge density wave of kagome metal ScV₆Sn₆

Tuning charge density wave of kagome metal ScV₆Sn₆

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Depth-dependent study of time-reversal symmetry-breaking in the kagome superconductor AV3Sb5

Cited by 1 publication

References 61 publications

Tuning charge density wave of kagome metal ScV6Sn6

Tuning charge density wave of kagome metal ScV6Sn6

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Tuning charge density wave of kagome metal ScV₆Sn₆

Tuning charge density wave of kagome metal ScV₆Sn₆