Pith Number

pith:7WMUF5WM

pith:2026:7WMUF5WMHBQ5EZRLRKCZ7HTVOD

not attested not anchored not stored refs pending

Seed Layer Engineering for Effective Charge Transfer Doping of MoS$_2$ Transistors

Bach Nguyen, Cesar Javier Lockhart de la Rosa, Chang Niu, Dennis Lin, Dmitry Zemlyanov, Francesca Iacopi, Himani Jawa, Joerg Appenzeller, Pierre Morin, Rana Yuvraj, Sahej Sharma, Shalini Tripathi, Shao-Heng Yang, Shiva Radhakrishnan, Thomas E. Beechem, Zhihong Chen

The thickness and oxygen content during deposition of a Ta seed layer control both disorder and charge-transfer doping at the HfOx-MoS2 interface, directly setting transistor threshold voltage and on-current.

arxiv:2604.17729 v2 · 2026-04-20 · cond-mat.mtrl-sci

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\usepackage{pith}
\pithnumber{7WMUF5WMHBQ5EZRLRKCZ7HTVOD}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

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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

The seed layer both introduces disorder into the MoS2 channel and modifies the interfacial charge environment controlling charge transfer between HfOx and MoS2. Better performance was obtained with ultrathin 0.2 nm Ta seed layers deposited under oxygen-poor conditions, which limit deposition-induced damage while facilitating charge transfer.

C2weakest assumption

That the strong correlations between seed thickness/conditions, electrical metrics, and spectroscopic signatures are caused by seed-induced disorder and interfacial charge transfer rather than other uncontrolled variables in fabrication or measurement.

C3one line summary

Ultrathin 0.2 nm Ta seed layers deposited under oxygen-poor conditions optimize MoS2 transistor performance by limiting disorder while enabling effective charge transfer doping from the HfOx dielectric.

Receipt and verification

First computed	2026-06-05T01:15:23.697877Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd9942f6cc3861d2662b8a859f9e7570f1ad7996e00de18a9ec761f1a75add29

Aliases

arxiv: 2604.17729 · arxiv_version: 2604.17729v2 · doi: 10.48550/arxiv.2604.17729 · pith_short_12: 7WMUF5WMHBQ5 · pith_short_16: 7WMUF5WMHBQ5EZRL · pith_short_8: 7WMUF5WM

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7WMUF5WMHBQ5EZRLRKCZ7HTVOD \
  | 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: fd9942f6cc3861d2662b8a859f9e7570f1ad7996e00de18a9ec761f1a75add29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87c7a281162616cd4d38761a50436efa261a8cb7ff96cb64d676940ef85c30ab",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-04-20T02:33:40Z",
    "title_canon_sha256": "625e4b0a99a9e16d0f87db19ba45b48f16228b34fc2458e2b034748c5fe19b5a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.17729",
    "kind": "arxiv",
    "version": 2
  }
}