{
  "abstract": "In this study we present a complete first-order Raman scattering spectrum of paramagnetic phase of MnTe$_2$- a material, where new type of spin texture induced by noncoplanar antiferromagnetic ordering below the Néel temperature ($T_N \\approx 90$ K) gives rise to unconventional scenario of magnetism. Basic properties of all five phonon modes ($A_g$, $E_g$ and three $T_g$) predicted by the group theory have been successfully approached through polarization, excitation and temperature dependent measurements. In particular, the ever-missing phonon mode of $T_g$ symmetry has been unambiguously resolved in the room temperature Raman spectrum at approximately 107 cm$^{-1}$, just 1.5 cm$^{-1}$ higher in frequency compared to the $E_g$ mode. Density functional theory calculations reproduce the observed Raman-active phonon spectrum and support the assignment of all five first-order Raman modes, including the near-degeneracy of the $E_g$ and one of the $T_g$ vibrations. The calculations further reveal a dense manifold of low-energy antiferromagnetic spin configurations, separated from the ground state by only a few meV per formula unit. Furthermore, strong signals of inelastically scattered light from the paramagnetic (PM) phase of MnTe$_2$ were acquired with long wavelength excitations, i.e. 633 nm and 785 nm, revealing the $2A_g$ overtone at approx. 360 cm$^{-1}$. The enhanced absorption of the light in the near infrared range could be a putative reason behind the anomalous angular dependence of scattered intensity of the highest frequency $T_g$ phonon mode (183 cm$^{-1}$) measured in PM MnTe$_2$ with parallelly aligned polarizers. Finally, upon cooling just below the $T_N$, the measured properties of phonons remained basically unperturbed by the incipient long-range antiferromagnetic ordering.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.28844",
  "author_total": 15,
  "authors": [
    {
      "name": "Taras Palasyuk"
    },
    {
      "name": "Dominik Kurzydłowski"
    },
    {
      "name": "Ashutosh S. Wadge"
    },
    {
      "name": "Rajmund Bacewicz"
    },
    {
      "name": "Madhavi H. Dalsaniya"
    },
    {
      "name": "Michał Wierzbicki"
    },
    {
      "name": "Daniel Jastrzebski"
    },
    {
      "name": "Andrzej Wiśniewski"
    },
    {
      "name": "Wojciech Szuszkiewicz"
    },
    {
      "name": "Igor Antoniazzi"
    },
    {
      "name": "Bruno Camargo"
    },
    {
      "name": "Maciej R. Molas"
    },
    {
      "name": "Adam Babiński"
    },
    {
      "name": "Krzysztof Zberecki"
    },
    {
      "name": "Cezariusz Jastrzebski"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/72348yc5nce0v.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.28844",
  "fulltext_url": null,
  "id": "72348yc5nce0v",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.28844",
  "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.mtrl-sci"
    ],
    [
      "arxiv",
      "cond-mat.other"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.28844",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/72348yc5nce0v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.28844",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.28844"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Paramagnetic phase of MnTe$_2$: complete one phonon Raman spectrum",
  "title_text": "Paramagnetic phase of MnTe_2: complete one phonon Raman spectrum",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/72348yc5nce0v",
  "venue": "arXiv",
  "versions": []
}