---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19531'
abstract:
- lang: eng
  text: In standard quantum electrodynamics (QED), the so-called non-minimal (Pauli)
    coupling is suppressed for elementary particles and has no physical implications.
    Here, we show that the Pauli term naturally appears in a known family of Dirac
    materials—the lead-halide perovskites, suggesting a novel playground for the study
    of analog QED effects. We outline measurable manifestations of the Pauli term
    in the phenomena pertaining to (i) relativistic corrections to bound states (ii)
    the Klein paradox, and (iii) spin effects in scattering. In particular, we demonstrate
    that (a) the binding energy of an electron in the vicinity of a positively charged
    defect is noticeably decreased due to the polarizability of lead ions and the
    appearance of a Darwin-like term, (b) strong spin-orbit coupling due to the Pauli
    term affects the exciton states, and (c) scattering of an electron off an energy
    barrier with broken mirror symmetry produces spin polarization in the outgoing
    current. Our study adds to the understanding of quantum phenomena in lead-halide
    perovskites and paves the way for tabletop simulations of analog Dirac-Pauli equations.
article_number: '37'
article_processing_charge: Yes
article_type: original
author:
- first_name: Abhishek
  full_name: Shiva Kumar, Abhishek
  id: 5e9a6931-eb97-11eb-a6c2-e96f7058d77a
  last_name: Shiva Kumar
- first_name: Mikhail
  full_name: Maslov, Mikhail
  id: 2E65BB0E-F248-11E8-B48F-1D18A9856A87
  last_name: Maslov
  orcid: 0000-0003-4074-2570
- first_name: Mikhail
  full_name: Lemeshko, Mikhail
  id: 37CB05FA-F248-11E8-B48F-1D18A9856A87
  last_name: Lemeshko
  orcid: 0000-0002-6990-7802
- first_name: Artem
  full_name: Volosniev, Artem
  id: 37D278BC-F248-11E8-B48F-1D18A9856A87
  last_name: Volosniev
  orcid: 0000-0003-0393-5525
- first_name: Zhanybek
  full_name: Alpichshev, Zhanybek
  id: 45E67A2A-F248-11E8-B48F-1D18A9856A87
  last_name: Alpichshev
  orcid: 0000-0002-7183-5203
citation:
  ama: Shiva Kumar A, Maslov M, Lemeshko M, Volosniev A, Alpichshev Z. Massive Dirac-Pauli
    physics in lead-halide perovskites. <i>npj Quantum Materials</i>. 2025;10. doi:<a
    href="https://doi.org/10.1038/s41535-025-00754-7">10.1038/s41535-025-00754-7</a>
  apa: Shiva Kumar, A., Maslov, M., Lemeshko, M., Volosniev, A., &#38; Alpichshev,
    Z. (2025). Massive Dirac-Pauli physics in lead-halide perovskites. <i>Npj Quantum
    Materials</i>. Springer Nature. <a href="https://doi.org/10.1038/s41535-025-00754-7">https://doi.org/10.1038/s41535-025-00754-7</a>
  chicago: Shiva Kumar, Abhishek, Mikhail Maslov, Mikhail Lemeshko, Artem Volosniev,
    and Zhanybek Alpichshev. “Massive Dirac-Pauli Physics in Lead-Halide Perovskites.”
    <i>Npj Quantum Materials</i>. Springer Nature, 2025. <a href="https://doi.org/10.1038/s41535-025-00754-7">https://doi.org/10.1038/s41535-025-00754-7</a>.
  ieee: A. Shiva Kumar, M. Maslov, M. Lemeshko, A. Volosniev, and Z. Alpichshev, “Massive
    Dirac-Pauli physics in lead-halide perovskites,” <i>npj Quantum Materials</i>,
    vol. 10. Springer Nature, 2025.
  ista: Shiva Kumar A, Maslov M, Lemeshko M, Volosniev A, Alpichshev Z. 2025. Massive
    Dirac-Pauli physics in lead-halide perovskites. npj Quantum Materials. 10, 37.
  mla: Shiva Kumar, Abhishek, et al. “Massive Dirac-Pauli Physics in Lead-Halide Perovskites.”
    <i>Npj Quantum Materials</i>, vol. 10, 37, Springer Nature, 2025, doi:<a href="https://doi.org/10.1038/s41535-025-00754-7">10.1038/s41535-025-00754-7</a>.
  short: A. Shiva Kumar, M. Maslov, M. Lemeshko, A. Volosniev, Z. Alpichshev, Npj
    Quantum Materials 10 (2025).
corr_author: '1'
date_created: 2025-04-08T18:13:06Z
date_published: 2025-04-04T00:00:00Z
date_updated: 2025-09-30T11:32:32Z
day: '04'
ddc:
- '530'
department:
- _id: GradSch
- _id: ZhAl
- _id: MiLe
doi: 10.1038/s41535-025-00754-7
external_id:
  isi:
  - '001459830100002'
file:
- access_level: open_access
  checksum: 08b1a94b362bb65482887e50020810e5
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  creator: dernst
  date_created: 2025-04-10T06:12:49Z
  date_updated: 2025-04-10T06:12:49Z
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  file_name: 2025_njpQuantumMaterials_Kumar.pdf
  file_size: 592092
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file_date_updated: 2025-04-10T06:12:49Z
has_accepted_license: '1'
intvolume: '        10'
isi: 1
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: npj Quantum Materials
publication_identifier:
  eissn:
  - 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - relation: software
    url: https://git.ista.ac.at/mmaslov/dirac_pauli_LHP
scopus_import: '1'
status: public
title: Massive Dirac-Pauli physics in lead-halide perovskites
tmp:
  image: /images/cc_by_nc_nd.png
  legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
  name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
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  short: CC BY-NC-ND (4.0)
type: journal_article
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volume: 10
year: '2025'
...