Multilevel Nanoarray Spin–Orbit Torque Device for Process-in-Memory Applications
Why this work is in the frame
A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.
Bibliographic record
Abstract
The advancement of data-driven technologies has increased energy and time consumption in data transfer between processors and memory units, limiting further improvement in device performance. This challenge can be addressed by introducing process-in-memory (PIM) architecture, which alleviates data transfer overhead through in-memory computation. In this work, we propose multilevel nanoarray spin-orbit torque (SOT) devices for PIM applications. In a Hall bar structure with multiple ferromagnetic islands, the SOT switching current varies depending on the size or shape of each island. Discrete multilevel states can then be precisely controlled by modulating input current, thus demonstrating analog PIM functionality. Furthermore, the same device also enables logic operations, with pulse currents as digital inputs and multilevel resistances as digital outputs, thereby demonstrating its suitability for digital PIM applications. Notably, multilevel SOT switching can operate with nanosecond current pulses, without requiring external magnetic field, highlighting its potential for ultrafast, energy-efficient PIM platforms.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 it