{
  "abstract": "Multiferroic domain walls in functional oxides exhibit properties distinct from the bulk and are increasingly exploited as active elements in nanoelectronic and photonic devices. Deterministic tuning of domain populations has typically remained limited to local solutions, or removal with temperature. Here, the manipulation of ferroelastic domain structure, and removal of the twin walls between them in single-crystal LaAlO3 using in situ uniaxial strain is demonstrated. Combining atomic force microscopy, X-ray diffraction, and Raman spectroscopy with first-principles calculations, the microscopic evolution of the twin domain population is mapped through a strain-driven transition from the rhombohedral R3¯c ground state toward the predicted orthorhombic Fmmm phase. Applied strains below 0.5% produce pronounced surface flattening and large-scale domain reorganization, establishing uniaxial strain as a technically accessible tuning parameter for ferroelastic domain engineering. These results open a route to active alterations of domain architectures in LaAlO3 -based heterostructures, with implications for epitaxial film properties, nanoscale phonon-polariton optics, and ultrafast lattice control.",
  "abstract_shown": true,
  "affiliations": [
    "Institut für Angewandte Physik, Technische Universität Dresden, Dresden, Germany.",
    "Würzburg-Dresden Cluster of Excellence (EXC2147) ctd.qmat - Complexity, Topology, and Dynamics in Quantum Matter, Dresden, Germany.",
    "Institute of Solid State and Materials Physics, Technische Universität Dresden, Dresden, Germany.",
    "Institut für Theoretische Physik and Center for Materials Research (LaMa/ZfM), Justus-Liebig-Universität Gießen, Gießen, Germany.",
    "Department of Quantum Matter Physics (DQMP), University of Geneva, Geneva, Switzerland.",
    "Physics Department, ETH Zurich, Zürich, Switzerland.",
    "Institute of Applied Physics, University of Bern, Bern, Switzerland.",
    "Fraunhofer Institute for Photonic Microsystems IPMS Center Nanoelectronic Technologies (CNT), Dresden, Germany."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 18,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Matthias Roeper",
      "orcid": "0009-0008-4779-7383"
    },
    {
      "affs": [
        0
      ],
      "name": "Robin Buschbeck",
      "orcid": "0000-0001-6816-4077"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Jakob Wetzel",
      "orcid": "0009-0000-1217-521X"
    },
    {
      "affs": [
        2
      ],
      "name": "Tobias Ritschel"
    },
    {
      "affs": [
        0
      ],
      "name": "Anna-Lena Hofmann",
      "orcid": "0009-0006-1294-1184"
    },
    {
      "affs": [
        0
      ],
      "name": "Vladyslav Kovtunovych"
    },
    {
      "affs": [
        3
      ],
      "name": "Mike N Pionteck",
      "orcid": "0000-0001-9937-1546"
    },
    {
      "affs": [
        4
      ],
      "name": "Javier Taboada-Gutiérrez",
      "orcid": "0000-0001-7401-9722"
    },
    {
      "affs": [
        4
      ],
      "name": "Alexey B Kuzmenko",
      "orcid": "0000-0001-9574-6435"
    },
    {
      "affs": [
        5
      ],
      "name": "Martina Basini"
    },
    {
      "affs": [
        6
      ],
      "name": "Vivek Unikandanunni",
      "orcid": "0000-0002-6022-1206"
    },
    {
      "affs": [
        0
      ],
      "name": "Iuliia Kiseleva"
    },
    {
      "affs": [
        2,
        1
      ],
      "name": "Jochen Geck"
    },
    {
      "affs": [
        0
      ],
      "name": "Susanne C Kehr",
      "orcid": "0000-0002-3857-673X"
    },
    {
      "affs": [
        7
      ],
      "name": "Maximilian Lederer",
      "orcid": "0000-0002-1739-2747"
    },
    {
      "affs": [
        3
      ],
      "name": "Simone Sanna",
      "orcid": "0000-0003-4416-0252"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Lukas M Eng",
      "orcid": "0000-0002-2484-4158"
    },
    {
      "affs": [
        0
      ],
      "name": "Samuel D Seddon",
      "orcid": "0000-0001-8900-9308"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1rrnyg6knvp98.bib",
  "cited_by": 0,
  "doi": "10.1002/advs.78098",
  "fulltext_url": "https://europepmc.org/articles/PMC13669226",
  "id": "1rrnyg6knvp98",
  "issns": [
    "2198-3844"
  ],
  "landing_url": "https://europepmc.org/article/MED/42875737",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2504|Multiferroics and related materials"
    ]
  ],
  "openalex": "W7221772207",
  "pdf_url": "https://europepmc.org/articles/PMC13669226?pdf=render",
  "pmcid": "PMC13669226",
  "pmid": "42875737",
  "published": "2026-10-14",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1rrnyg6knvp98.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:46Z",
      "native_id": "MED:42875737",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42875737"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Multiferroics and related materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Uniaxial Strain-Driven Ferroelastic Domain Tuning in LaAlO 3.",
  "title_text": "Uniaxial Strain-Driven Ferroelastic Domain Tuning in LaAlO 3.",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:46Z",
  "url": "https://research.draconitic.com/paper/1rrnyg6knvp98",
  "venue": "Advanced science (Weinheim, Baden-Wurttemberg, Germany)",
  "versions": []
}