{
  "id": "2103.09038",
  "version": "v1",
  "published": "2021-03-16T13:14:09.000Z",
  "updated": "2021-03-16T13:14:09.000Z",
  "title": "Spin-Phonon Interaction in Yttrium Iron Garnet",
  "authors": [
    "Kevin S. Olsson",
    "Jeongheon Choe",
    "Martin Rodriguez-Vega",
    "Guru Khalsa",
    "Nicole A. Benedek",
    "Bin Fang",
    "Jianshi Zhou",
    "Gregory A. Fiete",
    "Xiaoqin Li"
  ],
  "comment": "12 pages, 4 figures, 1 table; (Supp. Info. 10 pages, 5 figures, 2 tables)",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "Spin-phonon interaction is an important channel for spin and energy relaxation in magnetic insulators. Understanding this interaction is critical for developing magnetic insulator-based spintronic devices. Quantifying this interaction in yttrium iron garnet (YIG), one of the most extensively investigated magnetic insulators, remains challenging because of the large number of atoms in a unit cell. Here, we report temperature-dependent and polarization-resolved Raman measurements in a YIG bulk crystal. We first classify the phonon modes based on their symmetry. We then develop a modified mean-field theory and define a symmetry-adapted parameter to quantify spin-phonon interaction in a phonon-mode specific way for the first time in YIG. Based on this improved mean-field theory, we discover a positive correlation between the spin-phonon interaction strength and the phonon frequency.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-03-16T13:14:09.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "yttrium iron garnet",
      "magnetic insulators",
      "mean-field theory",
      "developing magnetic insulator-based spintronic devices",
      "yig bulk crystal"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}