{
  "abstract": "We investigate monolayer MoS$_{2x}$Se$_{2(1-x)}$ alloys across the full composition range using optical spectroscopy. We demonstrate continuous tuning of the optical gap over $\\sim$0.35 eV, accompanied by a systematic reduction of the B--A exciton splitting, in agreement with density functional theory calculations. Temperature-dependent measurements reveal a progressive increase of the average phonon energy from Se-rich to S-rich alloys that follows a simple reduced-mass scaling model. Polarization-resolved spectroscopy further shows a monotonic increase of the circular polarization from nearly zero in MoSe$_2$ to $\\sim$15\\% in MoS$_2$ at 78 K. The observed evolution of the polarization is attributed to alloy-induced modifications of the electronic structure that modify bright--dark exciton mixing and the associated valley depolarization. These findings establish alloy engineering as an effective strategy for controlling excitonic properties in TMD monolayers.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: Phys. Rev. Materials 10, 104010 (2026)",
  "arxiv": "2608.03347",
  "author_total": 15,
  "authors": [
    {
      "name": "Eirini Katsipoulaki"
    },
    {
      "name": "Adlen Smiri"
    },
    {
      "name": "Panagiotis Spiliotakis"
    },
    {
      "name": "Konstantinos Mourzidis"
    },
    {
      "name": "Danae Katrisioti"
    },
    {
      "name": "Takashi Taniguchi"
    },
    {
      "name": "Kenji Watanabe"
    },
    {
      "name": "Georgios Kopidakis"
    },
    {
      "name": "Zdenek Sofer"
    },
    {
      "name": "Gang Wang"
    },
    {
      "name": "Emmanuel Stratakis"
    },
    {
      "name": "George Kioseoglou"
    },
    {
      "name": "Iann C. Gerber"
    },
    {
      "name": "Xavier Marie"
    },
    {
      "name": "Ioannis Paradisanos"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1c3ddv5zryqdg.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.03347",
  "fulltext_url": null,
  "id": "1c3ddv5zryqdg",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.03347",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.03347",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1c3ddv5zryqdg.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2608.03347",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.03347"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Alloy engineering of excitonic properties in TMD monolayers",
  "title_text": "Alloy engineering of excitonic properties in TMD monolayers",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/1c3ddv5zryqdg",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/m7kc-8q5v",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}