Pith Number

pith:B3SZHQII

pith:2026:B3SZHQII3TCKR5MON4TTX4ITPZ

not attested not anchored not stored refs resolved

On-demand steering of hyperbolic chiral polaritons

Andrea S. Dai, Andrew J. Millis, Colin Nuckolls, Daria Balatsky, Ding Xu, D. N. Basov, Emma Lian, Francesco L. Ruta, Fuyang Tay, Inki Lee, James G. Analytis, Milan Delor, Noah Bussell, Xavier Roy

Reversing light helicity switches the propagation direction of hyperbolic and surface plasmons in MoOCl2.

arxiv:2605.12686 v1 · 2026-05-12 · cond-mat.mtrl-sci · physics.optics

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\pithnumber{B3SZHQII3TCKR5MON4TTX4ITPZ}

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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

We show that both hyperbolic and surface plasmons in MoOCl2 display chiral fields, and that their propagation direction can be completely switched upon light helicity reversal.

C2weakest assumption

The observed direction reversal is produced by the intrinsic hyperbolic spin Hall effect rather than by polarization-dependent artifacts, material inhomogeneities, or the specific interference conditions of the far-field pump-probe microscope.

C3one line summary

First demonstration of the hyperbolic spin Hall effect in a natural hyperbolic van der Waals metal, with complete reversal of plasmon propagation direction upon light helicity reversal.

References

50 extracted · 50 resolved · 0 Pith anchors

[1] Basov, D. N., Fogler, M. M. & García De Abajo, F. J. Polaritons in van der Waals materials. Science 354, (2016) 2016

[2] Wang, H. et al. Planar hyperbolic polaritons in 2D van der Waals materials. Nat. Commun. 15, 69 (2024) 2024

[3] de Abajo, F. J. G. et al. Roadmap for photonics with 2D materials. ACS Photonics 12, 3961–4095 (2025) 2025

[4] Bliokh, K. Y., Rodríguez-Fortuño, F. J., Nori, F. & Zayats, A. V. Spin–orbit interactions of light. Nat. Photonics 9, 796–808 (2015) 2015

[5] Van Mechelen, T. & Jacob, Z. Universal spin-momentum locking of evanescent waves. Optica 3, 118–126 (2016) 2016

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:09:49.922597Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ee593c108dcc4a8f58e6f273bf1137e6e1f43895db875671bae71496579bdc4

Aliases

arxiv: 2605.12686 · arxiv_version: 2605.12686v1 · doi: 10.48550/arxiv.2605.12686 · pith_short_12: B3SZHQII3TCK · pith_short_16: B3SZHQII3TCKR5MO · pith_short_8: B3SZHQII

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/B3SZHQII3TCKR5MON4TTX4ITPZ \
  | 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: 0ee593c108dcc4a8f58e6f273bf1137e6e1f43895db875671bae71496579bdc4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce97a703940038b9da0b3a2712d962229dce404d7dad774bf1ad8bd95abc7d33",
    "cross_cats_sorted": [
      "physics.optics"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.mtrl-sci",
    "submitted_at": "2026-05-12T19:34:55Z",
    "title_canon_sha256": "72a0746a8f50d5abe4ec6b0772e6da402bd09f0ea1e0e05fc530cdbb5bf4c320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12686",
    "kind": "arxiv",
    "version": 1
  }
}