{
  "abstract": "Large linear positive magnetoresistance (LPMR) in topological and magnetic materials remains a subject of intense debate, particularly in noncollinear spin systems where spin-dependent scattering complicates charge transport. Manganese phosphide (MnP), a helimagnetic binary pnictide with multiple field-induced magnetic transitions, provides a useful platform to investigate the interplay between complex magnetism and electronic topology. Here, we present a comprehensive experimental and theoretical investigation of phase-dependent magnetotransport in high-quality MnP single crystals. Hall measurements reveal an anomalous Hall effect dominated by skew scattering at high temperatures and a finite topological Hall effect in the noncollinear fan (FAN) and low-temperature screw (SCR) phases. At low temperatures, we observe a large, non-saturating LPMR reaching nearly 800 percent at 4 K and 15 T, with a pronounced linear field dependence in the field-polarized ferromagnetic (FM2) state. First-principles calculations reveal a strongly anisotropic semi-Dirac-like band at the Y point that progressively approaches the Fermi level from the SCR to FAN and FM2 states. Our analysis indicates that the resulting small Fermi pocket can access the extreme quantum-limit regime at experimentally accessible fields, providing a microscopic framework for the observed LPMR within Abrikosov's quantum magnetoresistance theory.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.09781",
  "author_total": 10,
  "authors": [
    {
      "name": "Prasanta Chowdhury"
    },
    {
      "name": "Jyotirmoy Sau"
    },
    {
      "name": "Sanat Kumar Adhikari"
    },
    {
      "name": "Sourav Chowdhury"
    },
    {
      "name": "Peter Bencok"
    },
    {
      "name": "Matthias Gutmann"
    },
    {
      "name": "Souvik Chatterjee"
    },
    {
      "name": "Saurav Giri"
    },
    {
      "name": "Manoranjan Kumar"
    },
    {
      "name": "Subham Majumdar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1yry959jdz1ga.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.09781",
  "fulltext_url": null,
  "id": "1yry959jdz1ga",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.09781",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.str-el"
    ],
    [
      "openalex",
      "3107|Topological Materials and Phenomena"
    ]
  ],
  "openalex": "W7212134784",
  "pdf_url": "https://arxiv.org/pdf/2609.09781",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1yry959jdz1ga.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:20:12Z",
      "native_id": "2609.09781",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.09781"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.str-el",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Semi-Dirac States and Quantum Linear Magnetoresistance in Helimagnetic Pnictide MnP",
  "title_text": "Semi-Dirac States and Quantum Linear Magnetoresistance in Helimagnetic Pnictide MnP",
  "type": "preprint",
  "updated_at": "2026-10-30T12:20:12Z",
  "url": "https://research.draconitic.com/paper/1yry959jdz1ga",
  "venue": "arXiv",
  "versions": []
}