{
  "abstract": "We study coherent two-terminal transport through a finite-width $d$-wave altermagnetic quantum ring with nonmagnetic leads. A confined Aharonov--Bohm flux remains exactly $h/e$ periodic and, in the symmetric one-mode geometry, produces an exact half-flux transmission zero. A perpendicular field shifts the interference pattern according to an effective area $A_{\\rm eff}=1.0342\\,πr_0^2$ and the altermagnetic splitting resolves the common zero into nearby spin-dependent nodes. Rotating the crystal reverses the transmitted spin, whereas the mirror orientation $θ_A=π/4$ is exactly spin degenerate. For a $50$~nm reference ring, sub-tesla fields yield windows with $|P_T|>0.99$, the most accessible of which requires a uniform field alone and no confined flux. Finite-bias, thermal, disorder, Zeeman, and spin-conserving voltage-probe calculations show that the polarization is appreciably more stable than individual coherent-resonance amplitudes. These results identify interference-node positions, flux periodicity, and crystal-controlled spin polarization as experimentally useful signatures of an altermagnetic mesoscopic interferometer.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27173",
  "author_total": 1,
  "authors": [
    {
      "name": "Edilberto O. Silva"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3yt5bv19g5rnk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27173",
  "fulltext_url": null,
  "id": "3yt5bv19g5rnk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27173",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mes-hall"
    ],
    [
      "openalex",
      "3107|Quantum and electron transport phenomena"
    ]
  ],
  "openalex": "W7223116672",
  "pdf_url": "https://arxiv.org/pdf/2610.27173",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3yt5bv19g5rnk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27173",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27173"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Ballistic transport and crystallographic control in altermagnetic quantum rings",
  "title_text": "Ballistic transport and crystallographic control in altermagnetic quantum rings",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/3yt5bv19g5rnk",
  "venue": "arXiv",
  "versions": []
}