We present an investigation of the band structure in the semi-metallic two-dimensional (2D) PtSe2 based on thermoelectric transport phenomena. The gate-tuned electrical conductivity and thermoelectric power were measured by varying the temperature using mechanically exfoliated PtSe2 nanosheets, including naturally doped non-neutral samples. Through the synergy of the gate-tuning effect and shifted zero-gate energy level, the semi-metallic band structure of 2D PtSe2 was confirmed by the transport properties in the band over a wide energy range. The temperature dependence of the transport properties was also investigated to determine the band structure and intrinsic properties.
|Journal||Applied Physics Letters|
|Publication status||Published - 2022 Jan 24|
Bibliographical noteFunding Information:
This work was supported by the Yonsei-KIST Institutional Program (Project No. 2Z06430-20-P069), the Technology Innovation Program (“20013621,” Center for Super Critical Material Industrial Technology) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea), and the Basic Science Research Program through the National Research Foundation of Korea (NRF) (No. NRF-2019R1A6A1A11055660). J.K. acknowledges support from the National Research Foundation of Korea (NRF) (Nos. NRF-2019R1I1A1A01063687 and NRF-2021R1A5A8033165) and by the DGIST R&D Program (No. 21-ET-07).
© 2022 Author(s).
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)