Extremely large magnetoresistance and Kohler's rule in PdSn<sub>4</sub>: a comprehensive study.
ORAL
Abstract
Systematic measurements of temperature and magnetic field dependent resistivity and magnetization, and electronic band structure properties obtained from angle resolved photoemission spectroscopy (ARPES) were conducted on high quality single crystals of PdSn4. We observe that PdSn4 has anisotropic properties with extremely large magnetoresistance (XMR). ARPES shows interesting surface features near Z and X points, and extensive electronic structure calculations agree well with ARPES. The X point feature corresponds to a gapped Dirac node arc, like observed in PtSn4. By comparing similar compounds, PdSn4 and PtSn4, we address the origin of the XMR in these compounds; neither carrier compensation nor the Dirac node arc surface state appear to be primary reason for the XMR. Additionally, perhaps remarkably, we find that Kohler's rule scaling of the magnetoresistance is obeyed over the full range of temperatures and field strengths that we explore.
*This work is supported by the US DOE, Basic Energy Sciences under Contract No. DE-AC02-07CH11358; Gordon and Betty Moore Foundation EPiQS Initiative (Grant No. GBMF4411).
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Presenters
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Na Hyun Jo
- Ames Laboratory and Iowa State University
- Ames Laboratory, Iowa State University
- Iowa state university/Ames Laboratory