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 (ρxx) and the Hall traces (ρyx) of HfTe5 crystals, which reveal the DSI in the transport-coefficients matrix. The oscillations in ρxx and ρyx 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 in the topological materials. This work evidences the universality of the DSI in the Dirac materials and provides indispensable information for a full understanding of this novel phenomenon.
Original language | English |
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Pages (from-to) | 914-920 |
Number of pages | 7 |
Journal | National Science Review |
Volume | 6 |
Issue number | 5 |
DOIs | |
State | Published - Oct 1 2019 |
Keywords
- Dirac materials
- Hall resistance
- discrete-scale invariance
- log-periodic oscillations
- magnetoresistance
- topological materials