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arXiv · 2008.13736

Evidence for large Rashba splitting in PtPb4 from Angle-Resolved Photoemission Spectroscopy

Kyungchan Lee·Daixiang Mou·Na Hyun Jo·Yun Wu·Benjamin Schrunk·John. M. Wilde·Andreas Kreyssig·Amelia Estry·Sergey L. Bud'ko·Manh Cuong Nguyen·Lin-Lin Wang Cai-Zhuang Wang·Kai-Ming Ho·Paul. C. Canfield·Adam Kaminski
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Abstract

We studied the electronic structure of PtPb$_{4}$ using laser angle-resolved photoemission spectroscopy(ARPES) and density functional theory(DFT) calculations. This material is closely related to PtSn$_{4}$, which exhibits exotic topological properties such as Dirac node arcs. Fermi surface(FS) of PtPb$_{4}$ consists of two electron pockets at the center of the Brillouin zone(BZ) and several hole pockets around the zone boundaries. Our ARPES data reveals significant Rashba splitting at the $Γ$ point in agreement with DFT calculations. The presence of Rashba splitting may render this material of potential interest for spintronic applications.

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Kyungchan Lee, Daixiang Mou, Na Hyun Jo, Yun Wu, Benjamin Schrunk, John. M. Wilde, Andreas Kreyssig, Amelia Estry, Sergey L. Bud'ko, Manh Cuong Nguyen, Lin-Lin Wang Cai-Zhuang Wang, Kai-Ming Ho, Paul. C. Canfield, Adam Kaminski. 2020-08-31. Evidence for large Rashba splitting in PtPb4 from Angle-Resolved Photoemission Spectroscopy. https://doi.org/10.1103/physrevb.103.085125

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