With the advanced investigations into low-dimensional systems, it has become essential to find materials having interesting lattices that can be exfoliated down to monolayer. One particular important structure is a kagome lattice with its potentially diverse and vibrant physics. We report a van-der-Waals kagome lattice material, Pd3P2S8, with several unique properties such as an intriguing flat band. The flat band is shown to arise from a possible compact-localized state of all five 4d orbitals of Pd. The diamagnetic susceptibility is precisely measured to support the calculated susceptibility obtained from the band structure. We further demonstrate that Pd3P2S8 can be exfoliated down to monolayer, which ultimately will allow the possible control of the localized states in this two-dimensional kagome lattice using the electric field gating.
|Publication status||Published - 2020 Dec|
Bibliographical noteFunding Information:
We would like to acknowledge Maxim Mostovoy and Daniel Khomskii for helpful discussions. IBS-CCES was supported by the Institute for Basic Science (IBS) in Korea (Grant No. IBS-R009-G1). J. H. K. acknowledges support by the National Research Foundation of Korea (NRF) grants funded by the Ministry of Science and ICT (MSIT) of Korea (No. 2019R1I1A2A01062306, No. 2017R1A5A1014862: SRC program (vdWMRC)). Computational resources have been provided by KISTI (KSC-2018-CHA-0051). J.G.P. was supported by the Leading Researcher Program of the National Research Foundation of Korea (Grant No. 2020R1A3B2079375).
© 2020, The Author(s).
All Science Journal Classification (ASJC) codes