Mitigating Tunneling Leakage in Ultrascaled HfS<sub>2</sub> pMOS Devices With Uniaxial Strain
Bibliographic record
Abstract
Monolayer HfS2is promising for an all-2D CMOS platform due to its well-balanced n- and p-type transport properties, and is predicted to show high drive currents into the sub-10-nm channel length regime. However, the OFF-state performance of the ultrascaled HfS2pMOS device is limited by direct source-drain tunneling (SDT) due to carriers in the degenerate light-hole band. Here we use full-band quantum transport simulations to show that this effect can be mitigated through the use of uniaxial tensile strain, which splits the degeneracy of the valence bands and tunes the effective mass in the transport direction to suppress SDT. Strain of 1-2% applied in the transport direction reduces the subthreshold swing by over 20 mV/dec, which can improve the ON current by over 50% at channel lengths below 7 nm. This approach can be further used to tune the HfS2pMOS device to match the nMOS characteristics at a similar channel length.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".