Shubnikov-de Haas Oscillations in 2D PtSe_2: A fermiological Charge Carrier Investigation
Abstract
Transport measurements under high magnetic fields and low temperatures characterize charge carriers in $\text{PtSe}_2$, revealing Shubnikov-de Haas oscillations, weak antilocalization, and Kondo effects, pertinent to spintronic and orbitronic applications.
High magnetic field and low temperature transport is carried out in order to characterize the charge carriers of PtSe_2. In particular, the Shubnikov-de Haas oscillations arising at applied magnetic field strengths gtrsim 4.5,T are found to occur exclusively in plane and emerge at a layer thickness of approx 18,nm, increasing in amplitude and decreasing in frequency for thinner PtSe_2 flakes. Moreover, the quantum transport time, Berry phase, Dingle temperature and cyclotron mass of the charge carriers are ascertained. The emergence of weak antilocalization (WAL) lies in contrast to the presence of magnetic moments from Pt vacancies. An explanation is provided on how WAL and the Kondo effect can be observed within the same material. Detailed information about the charge carriers and transport phenomena in PtSe_2 is obtained, which is relevant for the design of prospective spintronic and orbitronic devices and for the realization of orbital Hall effect-based architectures.
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