6144deterministic rowsUNKNOWNInspect metric contract
192matched sweep pairsUNKNOWNInspect metric contract
0live solver runsUNKNOWNInspect metric contract
SIMULATION / SA-DEV-2D-NDR-005
2D heterojunction NDR mechanism and evidence map
NDR evidence, not curve shape
Separate rectification, consecutive negative slope, peak/valley prominence, overlap-window shape, broadening, series/contact burden, sweep history, trap-memory contradiction, mechanism ambiguity, and owned replacement evidence without fitting or reproducing a published device.
EXPLORE
Start with the observable.
Use this page when the simulation is the primary artifact. The linked lesson explains the concept; the linked lab keeps the visual replay surface available.
- Hold alignment, broadening, background, contact/series burden, sweep direction, and trap-memory state fixed; move gate state and inspect how the synthetic overlap window shifts.
- Read current, local slope, consecutive-negative count, peak/valley prominence, and NDR state together. One declining segment does not pass the stable-NDR rule.
- Compare equal-magnitude positive and negative currents for rectification, then keep that result separate from the NDR classification.
- Switch forward/reverse sweep and memory state to expose classification, peak-location, and curve-shape contradictions before discussing a transport hypothesis.
- Use the decision gate to name the owned measurement, contact, uncertainty, and independently reproduced transport evidence required to replace the proxy.
BROWSER NDR EVIDENCE LAB
Require consecutive negative slopes. Compare the return sweep.
The SVG redraws one saved 16-point curve and its matched sweep. No physical transport solver or fitted device model runs in the browser.
Loading curveSweep classification alignedRectification stays separate
signed normalized I-V
Current shape and negative-slope evidence
selected sweepmatched sweepnegative segment
Red segments satisfy the local slope threshold. The curve passes only when at least two are consecutive and the saved peak/valley prominence also clears the declared gate.
| Bias | Current | Local slope | Consecutive | Rectification | NDR state |
|---|
RUN CARD
Conditions before conclusions.
The browser filters a saved CSV and redraws a local SVG. It does not run DOS integration, DFT, NEGF, TCAD, compact models, SPICE, trap kinetics, measurement fitting, or optimization, and it cannot identify a mechanism or recommend a material, bias, device, circuit, or process.
Primary knobs
- 16 signed normalized-bias samples
- four gate-control states and three alignment-window hypotheses
- narrow or broad window and low or elevated monotonic background
- bounded or high series/contact burden
- forward or reverse sweep with zero-memory reference or finite trap-memory proxy
Saved outputs
- dimensionless current, local slope, consecutive-negative count, peak/valley prominence, and rectification state
- matched-sweep peak and curve deltas, hysteresis contradiction, NDR state, and mechanism ambiguity
- contradiction flags, bounded evidence-readiness score, decision gate, and next owned evidence check
EXPORT
Download the public artifacts.
These exports are the supported public files for review. PDK files and restricted third-party material are not redistributed.
2D NDR evidence CSV
/data/2d-heterojunction-ndr-mechanism-evidence-map-v104.csv
Open file ->Typed web JSON
/data/2d-heterojunction-ndr-mechanism-evidence-map-web-v1.json
Open file ->Model card
/data/2d-heterojunction-ndr-mechanism-evidence-map-model-card-v1.md
Open file ->Metric contract
/data/2d-heterojunction-ndr-mechanism-evidence-map-metric-contract-v1.json
Open file ->Source spine
/data/2d-heterojunction-ndr-mechanism-evidence-map-source-spine-v1.json
Open file ->METHODS
How the number was made.
Methods are written for citation discipline: the extraction rule matters as much as the plotted value.
Generate the complete 16 x 4 x 3 x 2 x 2 x 2 x 2 x 2 Cartesian sweep with no randomness, fitting, optimization, hidden state, source calibration, or external device value.
Keep this method attached when reusing the figure or metric.
Build an original dimensionless monotonic background plus a gate- and alignment-shifted overlap-window envelope, then apply a declared series/contact compression transform to both bias polarities.
Keep this method attached when reusing the figure or metric.
Require two consecutive positive-branch finite-difference slopes below the declared threshold and a minimum peak/valley prominence before labeling a stable NDR proxy; one falling segment never passes.
Keep this method attached when reusing the figure or metric.
Compare matched forward and reverse curves before classification, preserve rectification as a separate equal-magnitude branch ratio, and route every shape to an owned replacement-evidence gate.
Keep this method attached when reusing the figure or metric.
Keep nine topic-specific claim maps and five primary/open source anchors separate from all generated coefficients and rows.
Keep this method attached when reusing the figure or metric.
LIMITS
What this page does not claim.
The MVP is useful because the limits are visible. These statements prevent a teaching simulation from being cited as silicon evidence.
Zero source numeric values, copied results, copied trace points, dimensions, material parameters, process conditions, contact values, calibrated models, live TCAD/NEGF/SPICE runs, measured rows, mechanism proofs, circuit advantages, rankings, recipes, optimization recommendations, signoff actions, or live server runs enter the dataset.
Carry this boundary into any derivative note, paper draft, or slide.
No physical gate, bias, temperature, material, stack, contact, geometry, linewidth, current, ratio, density, mobility, time, frequency, energy, power, area, or application value is predicted or recommended.
Carry this boundary into any derivative note, paper draft, or slide.
No neuromorphic, multivalued-logic, oscillator, low-power, product, vendor, material, architecture, or performance advantage is claimed.
Carry this boundary into any derivative note, paper draft, or slide.
A real claim requires owned forward/reverse I-V sweeps across declared gate and temperature conditions, contact/series evidence, repeatability, uncertainty, model lineage, independently reproduced transport calculations, mechanism discrimination, and accountable review.
Carry this boundary into any derivative note, paper draft, or slide.
EVIDENCE
Trace the claim back to artifacts.
The evidence route remains the catalog-level browser; this page is the simulation-level reading card.
6144 rows across 384 curves and 192 matched forward/reverse pairs with no random sampling, fitting, optimization, or source calibration.
SA-DEV-2D-NDR-005
9 topic-specific claim maps and 5 primary/open source anchors kept separate from every generated coefficient and row.
SA-DEV-2D-NDR-005
Stable NDR requires 2 consecutive negative-slope segments and 8% prominence; rectification and sweep-history consistency remain separate gates.
SA-DEV-2D-NDR-005
Independent Cartesian, equation, slope, peak/valley, rectification, sweep-pair, contradiction, decision-gate, zero-boundary, byte-identity, source-lineage, and SHA-256 verification is required in the canonical experiment folder.
SA-DEV-2D-NDR-005
Source spine
These links anchor the public teaching model. They do not convert the replay into a qualified process recipe or signoff result.
Gate-tunable NDR in a multifunctional van der Waals heterostructurePrimary scope anchor for keeping gate-tunable rectification, NDR, temperature dependence, and mechanism evidence distinct.Gate-tunable NDR preprint lineageVersion-lineage anchor for the later peer-reviewed article.Phosphorene/ReS2 heterojunction NDRPrimary contrast anchor for a broken-gap heterojunction mechanism class.Coherent interlayer tunneling and NDRPrimary contrast anchor for energy- and momentum-conserving resonant-tunneling evidence.Gate-tunable resonant tunneling in double bilayer graphenePrimary contrast anchor for alignment-controlled resonance and NDR evidence.
Public execution boundary
No server-side live ngspice execution, uploads, accounts, payments, comments, newsletter signup, or job/event submissions are active on this page.