Ferrimagnetism induced by thermal vibrations in oxygen-deficient manganite heterostructures

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{
  "id": "2179", 
  "updated": "2024-05-13T12:41:30.469804+00:00", 
  "metadata": {
    "version": 1, 
    "contributors": [
      {
        "givennames": "Moloud", 
        "affiliations": [
          "Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland"
        ], 
        "familyname": "Kaviani"
      }, 
      {
        "givennames": "Chiara", 
        "affiliations": [
          "Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland"
        ], 
        "familyname": "Ricca"
      }, 
      {
        "givennames": "Ulrich", 
        "affiliations": [
          "Department of Chemistry, Biochemistry and Pharmaceutical Sciences, University of Bern, Freiestrasse 3, 3012 Bern, Switzerland", 
          "Department of Chemistry and Physics of Materials, University of Salzburg, Jakob-Haringer-Str. 2A, A-5020 Salzburg, Austria"
        ], 
        "email": "ulrichjohannes.aschauer@plus.ac.at", 
        "familyname": "Aschauer"
      }
    ], 
    "title": "Ferrimagnetism induced by thermal vibrations in oxygen-deficient manganite heterostructures", 
    "_oai": {
      "id": "oai:materialscloud.org:2179"
    }, 
    "keywords": [
      "Ferrimagnetism", 
      "Oxygen vacancy", 
      "Perovskite manganite", 
      "MARVEL/DD5"
    ], 
    "publication_date": "May 13, 2024, 14:41:30", 
    "_files": [
      {
        "key": "diffmag.tar.gz", 
        "description": "Raw DFT data and jupyter notebook", 
        "checksum": "md5:b51e28391a2b3f0be577ec8a6bc3a1ca", 
        "size": 1765074795
      }, 
      {
        "key": "README.txt", 
        "description": "Description of data", 
        "checksum": "md5:f0ae805853bc3b75f35f24e766e9f4e5", 
        "size": 1620
      }
    ], 
    "references": [
      {
        "doi": "https://doi.org/10.48550/arXiv.2405.04630", 
        "citation": "M. Kaviani, C. Ricca, U. Aschauer, arXiv:2405.04630 (2024)", 
        "type": "Preprint"
      }
    ], 
    "description": "Super-exchange most often leads to antiferromagnetism in transition-metal perovskite oxides, yet ferromagnetism or ferrimagnetism would be preferred for many applications, for example in data storage. While alloying, epitaxial strain and defects were shown to lead to ferromagnetism, engineering this magnetic order remains a challenge. We propose, based on density functional theory calculations, a novel route to defect-engineer ferrimagnetism, which is based on preferential displacements of oxygen vacancies due to finite temperature vibrations. This mechanism has an unusual temperature dependence, as it is absent at 0K, strengthens with increasing temperature before vanishing once oxygen vacancies disorder, giving it a unique experimentally detectable signature.", 
    "status": "published", 
    "license": "Creative Commons Attribution 4.0 International", 
    "conceptrecid": "2178", 
    "is_last": true, 
    "mcid": "2024.70", 
    "edited_by": 576, 
    "id": "2179", 
    "owner": 646, 
    "license_addendum": null, 
    "doi": "10.24435/materialscloud:4f-2w"
  }, 
  "revision": 2, 
  "created": "2024-05-10T09:03:17.283157+00:00"
}