Log-periodic quantum magneto-oscillations and discrete-scale invariance in topological material HfTe₅.

ABSTRACT: Discrete-scale invariance (DSI) is a phenomenon featuring intriguing log-periodicity that can be rarely observed in quantum systems. Here, we report the log-periodic quantum oscillations in the longitudinal magnetoresistivity (ρ_xx ) and the Hall traces (ρ_yx ) of HfTe₅ crystals, which reveal the DSI in the transport-coefficients matrix. The oscillations in ρ_xx and ρ_yx show the consistent logB-periodicity with a phase shift. The finding of the logB oscillations in the Hall resistance supports the physical mechanism as a general quantum effect originating from the resonant scattering. Combined with theoretical simulations, we further clarify the origin of the log-periodic oscillations and the DSI

SUBMITTER: Wang H 

PROVIDER: S-EPMC8291527 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature