# Prop-02 — 7-Day Materials Watch (UQ / AL / GNN)

**Date:** 2026-09-05 ~00:15 America/New_York  
**Window:** new arXiv abs ~2026-08-29 → 2026-09-05  
**Track:** Prop-02 materials UQ / active learning / GNN (MP / OC adsorption / band gap)  
**Context:** Magpie-lite Track 2 pilot measured (`prop02_success_claimed` false); structure meta lift under study — lit should feed feature/AL ideas, not claim success.  
**Rule:** Real abs only; HTTP 200 verified. No fabrication.

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## Executive take

**Dedicated OC20 / materialsUQ-style GNN+UQ papers are thin in this 7d window.** Highest Prop-02 relevance is (1) high-throughput 2D discovery pipelines, (2) open materials ML tooling (electron density / MLMD), (3) experimental magnetic-topological targets. Keep **stack baselines**: materialsUQ [`2211.02235`](https://arxiv.org/abs/2211.02235), OC20 [`2010.09990`](https://arxiv.org/abs/2010.09990), DGKL ([GitHub](https://github.com/YueGroup/DGKL)).

**No change recommended** to Magpie-lite success criteria from this watch alone.

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## Ranked watch (in-window)

### 1. High-Throughput Computational Discovery of Inverted Resistive Switching in Two-Dimensional Materials
- **arXiv:** [2609.03578](https://arxiv.org/abs/2609.03578) · 2026-09-03 · Mitra, Kabiraj, Chen, Zhang, Meng et al. · HTTP 200  
- **Why:** HT computational screening expands atomristor materials beyond MoS₂/h-BN — closest “discovery loop” analogue to AL/UQ screening.  
- **Prop-02 link:** Candidate outer loop for Track 2 once uncertainty-guided acquisition exists; not an adsorption/band-gap UQ paper.  
- **Gap:** Device RS ≠ formation energy / adsorption energy tasks used in Magpie-lite.

### 2. SALTED: symmetry-adapted ML for electron densities in molecules and materials
- **arXiv:** [2609.03576](https://arxiv.org/abs/2609.03576) · 2026-09-03 · Lou, Lewis, Bernhard, Seifert, Salcedo et al. · HTTP 200  
- **Why:** Open-source materials ML package (density from coordinates/species) — tooling adjacent to GNN property models.  
- **Prop-02 link:** Possible feature / representation source; evaluate later if structure-meta ablation saturates.  
- **Gap:** Not UQ or AL; density ≠ band gap / adsorption targets.

### 3. EuIn₂Sb₂: epitaxially stabilized axion insulator candidate with strong SOC
- **arXiv:** [2609.02114](https://arxiv.org/abs/2609.02114) · 2026-09-02 · Lee, Nishihaya, Kriener, Nakamura, Yoneda et al. · HTTP 200  
- **Why:** Experimental magnetic topological / axion foothold — materials-discovery signal for MP-style screening themes.  
- **Prop-02 link:** Downstream validation target class, not AL metric. Surface-state confirmation pending.

### 4. Orbital-Free DFT-Assisted Machine-Learned Molecular Dynamics for Electric-Field-Driven Ionic Transport
- **arXiv:** [2609.03518](https://arxiv.org/abs/2609.03518) · 2026-09-03 · Nishiya, Nakata, Harada, Matsushita · (mtrl-sci feed)  
- **Why:** Hybrid OFDFT + ML potential MD — materials ML potentials under fields.  
- **Prop-02 link:** Soft — MLIP ecosystem; not GNN UQ on OC20.

### 5. Hierarchical automation of scanning probe microscopy through agentic orchestration…
- **arXiv:** [2609.04015](https://arxiv.org/abs/2609.04015) · 2026-09-03 · Slautin, Sanchez, Swanger, Liu et al.  
- **Why:** Agentic experimental AL / closed-loop SPM — conceptual cousin to computational AL.  
- **Prop-02 link:** Methods inspiration only; different modality than Magpie-lite.

### 6. Synthesis and Characterization of Compositionally Complex (Gd/Ho/Er/Dy)₂Zr₂O₇ Thin Film Combinatorial Library
- **arXiv:** [2609.04074](https://arxiv.org/abs/2609.04074) · 2026-09-03 · Pearl, Holliman, Emory, Safin et al.  
- **Why:** Combinatorial HT materials library — data-generation pattern for AL.  
- **Prop-02 link:** Soft.

### 7. Moiré-induced altermagnetism from nonmagnetic constituents
- **arXiv:** [2609.03271](https://arxiv.org/abs/2609.03271) · 2026-09-03 · Shi, Khodas, Martin · HTTP 200  
- **Why:** Theory materials / altermagnet platform (with Aug `2608.15811` lineage).  
- **Prop-02 link:** Topology/magnetism discovery theme; outside Magpie-lite property set.

### 8. Grain boundary evolution in nanoparticles
- **arXiv:** [2609.03307](https://arxiv.org/abs/2609.03307) · 2026-09-03 · Settem, Kumar, Srivastav  
- **Why:** Nanoparticle GB dynamics relevant to catalysis structure — adjacent to OC adsorbate–catalyst structural degrees of freedom.  
- **Prop-02 link:** Soft structure-feature idea for later OC-style work.

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## Explicit gaps (7d)

| Need | Status |
|------|--------|
| New OC20 / CatHub GNN+UQ benchmark paper | **Not found** in-window |
| New Materials Project band-gap AL paper | **Not found** in-window |
| Open code competing with materialsUQ / DGKL | **None new**; keep stack |

Near-window / stack (cite as baselines, not 7d news):  
- materialsUQ [2211.02235](https://arxiv.org/abs/2211.02235) · [github.com/usccolumbia/materialsUQ](https://github.com/usccolumbia/materialsUQ)  
- OC20 [2010.09990](https://arxiv.org/abs/2010.09990) · [opencatalystproject.org](https://opencatalystproject.org/)  
- DGKL DOI [10.1039/d6dd00020g](https://doi.org/10.1039/d6dd00020g) · [github.com/YueGroup/DGKL](https://github.com/YueGroup/DGKL)  
- Topological altermagnets [2608.15811](https://arxiv.org/abs/2608.15811) (2026-08-16; **outside** 7d)

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## Implications for Magpie-lite / Data Analyst

1. Do **not** wait on a new UQ paper to finish feature-group ablation — literature does not unblock `prop02_success_claimed` this week.  
2. If structure-meta lift is real, next lit-informed options (later): SALTED-style density descriptors (`2609.03576`) or GB/structure motifs (`2609.03307`) — only after E1/Prop-01 cadence allows.  
3. HT discovery paper `2609.03578` is the best “AL-shaped” computational narrative for Writing Bot notes later — still not a support claim.

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## Sources
- arXiv API `cat:cond-mat.mtrl-sci` (fresh pull 2026-09-05) + keyword queries  
- Abs HTTP 200 for ranked ids listed above  
- Companion: `lit-tracks-top3.md`, `lit-interim-continuous.md`