Pith Number

pith:55OAEVYU

pith:2025:55OAEVYUWJ4PAQOSNKGADDFEOP

not attested not anchored not stored refs resolved

Gate-tunable Josephson diodes in magic-angle twisted bilayer graphene

A. Achtermann, A. Rothstein, B. Beschoten, C. Stampfer, F. Hassler, F. Volmer, K. Watanabe, L. Banszerus, L. Klebl, R. J. Dolleman, T. Taniguchi

Gate voltage can tune and reverse the polarity of Josephson diodes in magic-angle twisted bilayer graphene at fixed magnetic fields.

arxiv:2510.15503 v1 · 2025-10-17 · cond-mat.mes-hall · cond-mat.mtrl-sci

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\usepackage{pith}
\pithnumber{55OAEVYUWJ4PAQOSNKGADDFEOP}

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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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Claims

C1strongest claim

Both junctions exhibit a prominent, gate-tunable Josephson diode effect, which we explain by a combination of large kinetic inductance and non-uniform supercurrent distribution. Despite their proximity, the JJs display differences in their interference patterns and different diode behavior, underscoring that microscopic inhomogeneities such as twist angle variations shape the non-uniform supercurrent and drive the diode behavior.

C2weakest assumption

The assumption that the observed diode behavior and differences between the two junctions are primarily driven by microscopic inhomogeneities such as twist angle variations rather than other unaccounted factors like disorder or junction geometry details (abstract, paragraph on explanation of diode effect).

C3one line summary

Experimental observation of gate-tunable Josephson diode effect in two adjacent junctions in MATBG attributed to kinetic inductance and non-uniform supercurrent distribution shaped by microscopic inhomogeneities.

References

92 extracted · 92 resolved · 0 Pith anchors

[1] 97 V, VR = 1

[2] (b) Diode eﬃciency as a function of magnetic ﬁeld extracted from the interference pattern taken at VL = 1

[3] 76kBTc is the supercon- ducting gap 2004 · doi:10.5281/zenodo.17376229

[4] M. Nadeem, M. S. Fuhrer, and X. Wang, The supercon- ducting diode eﬀect, Nat. Rev. Phys. 5, 558 (2023) 2023

[5] F. Ando, Y. Miyasaka, T. Li, J. Ishizuka, T. Arakawa, Y. Shiota, T. Moriyama, Y. Yanase, and T. Ono, Obser- vation of superconducting diode eﬀect, Nature 584, 373 (2020) 2020

Receipt and verification

First computed	2026-05-26T02:05:03.423776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef5c025714b278f041d26a8c018ca473e7c5e51603b81ff3f893353e0038c48f

Aliases

arxiv: 2510.15503 · arxiv_version: 2510.15503v1 · doi: 10.48550/arxiv.2510.15503 · pith_short_12: 55OAEVYUWJ4P · pith_short_16: 55OAEVYUWJ4PAQOS · pith_short_8: 55OAEVYU

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/55OAEVYUWJ4PAQOSNKGADDFEOP \
  | 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: ef5c025714b278f041d26a8c018ca473e7c5e51603b81ff3f893353e0038c48f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffebc466d4ab74ab26e6464da1ca6707ee77f1370486deebf2a5fae206754298",
    "cross_cats_sorted": [
      "cond-mat.mtrl-sci"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2025-10-17T10:17:08Z",
    "title_canon_sha256": "df18faa499fe19d0caa16da1f1775cc567f89c08748a76ec350bc0ed77db24ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2510.15503",
    "kind": "arxiv",
    "version": 1
  }
}