Pith Number

pith:UNBRWQ6L

pith:2026:UNBRWQ6LWXYMUE2BB6F6KYKGLO

not attested not anchored not stored refs pending

The high K anomaly in ScAlN explained

Ilan Shalish

The high dielectric constant measured in ScAlN arises from electromechanical inflation, in which internal electric fields drive lattice strain through the inverse piezoelectric effect.

arxiv:2605.03765 v2 · 2026-05-05 · cond-mat.mtrl-sci

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNBRWQ6LWXYMUE2BB6F6KYKGLO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

We demonstrate that this 'high K' behavior is a manifestation of electromechanical inflation, where the enormous internal electric fields of polar heterostructures induce macroscopic lattice strain via the inverse piezoelectric effect. By applying stress-free mechanical boundary conditions to the coupled equations of state, we derive an analytical relation for the effective permittivity: epsilon_eff=epsilon_33^S + e_33^2/C_33. This model quantitatively accounts for experimental observations across the ScAlN alloy range.

C2weakest assumption

That the mechanical boundary conditions in the experimental samples are truly stress-free, allowing the full inverse-piezoelectric strain to develop without external constraints, and that the internal electric fields in the heterostructures match the assumptions used to derive the effective permittivity formula.

C3one line summary

The high-K anomaly in ScAlN is explained by electromechanical inflation, with effective permittivity given by epsilon_eff = epsilon_33^S + e_33^2 / C_33 under stress-free boundary conditions.

Receipt and verification

First computed	2026-06-09T02:07:28.197623Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3431b43cbb5f0ca13410f8be561465b9bb0cf4234ef67d2c0863300c6043661

Aliases

arxiv: 2605.03765 · arxiv_version: 2605.03765v2 · doi: 10.48550/arxiv.2605.03765 · pith_short_12: UNBRWQ6LWXYM · pith_short_16: UNBRWQ6LWXYMUE2B · pith_short_8: UNBRWQ6L

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/UNBRWQ6LWXYMUE2BB6F6KYKGLO \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: a3431b43cbb5f0ca13410f8be561465b9bb0cf4234ef67d2c0863300c6043661

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13ce3874a13b134796454312065d4e50865f38609de081f17965a9d8106c7de5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-05-05T13:54:08Z",
    "title_canon_sha256": "e72e9edde612d3a115c651c9c4a222d0e44a021c5b2fd573b44dfdc59eb72940"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.03765",
    "kind": "arxiv",
    "version": 2
  }
}