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Anomalous magnetotransport behaviours in PtSe2 microflakes
Zhaoguo Li1, Jicheng Zhang1, Yong Zeng1
1Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, People's Republic of China.
Summary
We observed unusual electrical transport properties in platinum diselenide (PtSe2) microflakes. These findings in the 2D material suggest potential for new electronic applications and fundamental physics insights.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Solid State Physics
Background:
- Platinum diselenide (PtSe2) is a novel 2D transition metal dichalcogenide.
- Theoretically identified as a type-II Dirac semimetal, PtSe2 holds promise for fundamental physics and electronic applications.
Purpose of the Study:
- To investigate the electrical transport properties of PtSe2 microflakes.
- To explore the magnetotransport behavior and its implications for understanding type-II Dirac fermions.
Main Methods:
- Fabrication and characterization of PtSe2 microflakes.
- Electrical transport measurements under varying magnetic field orientations and temperatures.
Main Results:
- Anomalous magnetotransport properties were observed in PtSe2 microflakes.
- Anisotropic magnetoresistance was normalized using a 3D scaling factor involving magnetic field angle and mass anisotropy.
- Non-monotonic temperature-dependent magnetoresistance was found in both perpendicular and in-plane magnetic field configurations.
Conclusions:
- The observed anomalous magnetotransport behavior in PtSe2 microflakes is linked to type-II Dirac fermions.
- Further investigation is needed to fully elucidate the underlying physical mechanisms.
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