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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2506.15593 |
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Table of Contents:
- Platinum diselenide (PtSe2) is an emerging two-dimensional (2D) transition metal dichalcogenide known for its excellent electrical and optical properties, along with remarkable air stability. For PtSe2-based electronic devices, understanding high-field breakdown and heat dissipation is crucial for designing high-performance and energy-efficient systems operating under extreme conditions. In this work, we investigate the breakdown mechanisms of semimetallic PtSe2 at both low and room temperatures. Heat dissipation is quantified via interfacial thermal conductivity (ITC) of PtSe2/SiO2 and PtSe2/h-BN interfaces using Raman thermometry. Our findings indicate that at room temperature, device breakdown is predominantly governed by self-heating effects. Conversely, at low temperatures, the breakdown is mainly driven by carrier multiplication under high electric fields, as further confirmed by Hall measurements.