{
  "abstract": "The study of electronic orbital degrees of freedom, including the generation and control of orbital currents and orbital angular momentum, has emerged as a vibrant research field. Here, we study the orbital Hall effect (OHE), one of the key mechanisms for orbital current generation, in transition-metal kagome-lattice metals. We propose a large positive OHE in CsTi$_3$Bi$_5$ and negative OHEs in CsV$_3$Sb$_5$ and CsCr$_3$Sb$_5$ models. Orbital-sector decomposition shows that the $\\vert l^z_d \\vert=2$ $d$-orbital channel gives a positive contribution, whereas the $\\vert l^z \\vert=1$ $d$- and $p$-orbital channels can give negative contributions. Control calculations suggest a persistent orbital-sector sign tendency near the actual filling, while strong $p$-$d$ hybridization modulates the quantitative balance and total OHE sign. Thus, the compound and filling dependence of the OHE reflects both the sign tendency of each orbital sector and the hybridization-controlled balance among them. Furthermore, we investigate the loop-current phase of CsV$_3$Sb$_5$ and show that it induces finite local atomic orbital angular momentum. We also show that loop-current-related symmetry lowering allows finite symmetric components of the orbital conductivity tensor. This study provides a basis for exploring orbital currents and local orbital-angular-momentum responses in strongly correlated kagome metals.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "Journal reference: J. Phys. Soc. Jpn. 95, 104702 (2026)",
  "arxiv": "2608.06775",
  "author_total": 4,
  "authors": [
    {
      "name": "Jianxin Huang"
    },
    {
      "name": "Rina Tazai"
    },
    {
      "name": "Youichi Yamakawa"
    },
    {
      "name": "Hiroshi Kontani"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f59aqx5fm0vvk.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.06775",
  "fulltext_url": null,
  "id": "f59aqx5fm0vvk",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.06775",
  "language": null,
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.str-el"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2608.06775",
  "pmcid": null,
  "pmid": null,
  "published": "2026-08-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/f59aqx5fm0vvk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2608.06775",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.06775"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Prominent Intrinsic Orbital Hall Effect in the 135 Kagome Metal Family and Orbital Responses in the Loop-Current Phase",
  "title_text": "Prominent Intrinsic Orbital Hall Effect in the 135 Kagome Metal Family and Orbital Responses in the Loop-Current Phase",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/f59aqx5fm0vvk",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.7566/jpsj.95.104702",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}