---
_id: '12213'
abstract:
- lang: eng
  text: 'Motivated by properties-controlling potential of the strain, we investigate
    strain dependence of structure, electronic, and magnetic properties of Sr2IrO4
    using complementary theoretical tools: ab-initio calculations, analytical approaches
    (rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We
    find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid
    octahedra picture is not relevant. Second, we find fundamentally different behavior
    for compressive and tensile strain. One remarkable feature is the formation of
    two subsets of bond- and orbital-dependent carriers, a compass-like model, under
    compression. This originates from the strain-induced renormalization of the Ir-O-Ir
    superexchange and O on-site energy. We also show that under compressive (tensile)
    strain, Fermi surface becomes highly dispersive (relatively flat). Already at
    a tensile strain of 1.5%, we observe spectral weight redistribution, with the
    low-energy band acquiring almost purely singlet character. These results can be
    directly compared with future experiments.'
acknowledgement: E.M.P. thanks Eugenio Paris, Thorsten Schmitt, Krzysztof Wohlfeld,
  and other coauthors for an inspiring previous collaboration23, and is grateful to
  Gang Cao, Ambrose Seo, and Jungho Kim for insightful discussions. R.R. acknowledges
  helpful discussion with Sanjeev Kumar and Manuel Richter. This project has received
  funding from the European Union’s Horizon 2020 research and innovation program under
  the Marie Sklodowska-Curie grant agreement No 754411. C.C.C. acknowledges support
  from the U.S. National Science Foundation Award No. DMR-2142801.
article_number: '90'
article_processing_charge: No
article_type: original
author:
- first_name: Ekaterina
  full_name: Paerschke, Ekaterina
  id: 8275014E-6063-11E9-9B7F-6338E6697425
  last_name: Paerschke
  orcid: 0000-0003-0853-8182
- first_name: Wei-Chih
  full_name: Chen, Wei-Chih
  last_name: Chen
- first_name: Rajyavardhan
  full_name: Ray, Rajyavardhan
  last_name: Ray
- first_name: Cheng-Chien
  full_name: Chen, Cheng-Chien
  last_name: Chen
citation:
  ama: Paerschke E, Chen W-C, Ray R, Chen C-C. Evolution of electronic and magnetic
    properties of Sr₂IrO₄ under strain. <i>npj Quantum Materials</i>. 2022;7. doi:<a
    href="https://doi.org/10.1038/s41535-022-00496-w">10.1038/s41535-022-00496-w</a>
  apa: Paerschke, E., Chen, W.-C., Ray, R., &#38; Chen, C.-C. (2022). Evolution of
    electronic and magnetic properties of Sr₂IrO₄ under strain. <i>Npj Quantum Materials</i>.
    Springer Nature. <a href="https://doi.org/10.1038/s41535-022-00496-w">https://doi.org/10.1038/s41535-022-00496-w</a>
  chicago: Paerschke, Ekaterina, Wei-Chih Chen, Rajyavardhan Ray, and Cheng-Chien
    Chen. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.”
    <i>Npj Quantum Materials</i>. Springer Nature, 2022. <a href="https://doi.org/10.1038/s41535-022-00496-w">https://doi.org/10.1038/s41535-022-00496-w</a>.
  ieee: E. Paerschke, W.-C. Chen, R. Ray, and C.-C. Chen, “Evolution of electronic
    and magnetic properties of Sr₂IrO₄ under strain,” <i>npj Quantum Materials</i>,
    vol. 7. Springer Nature, 2022.
  ista: Paerschke E, Chen W-C, Ray R, Chen C-C. 2022. Evolution of electronic and
    magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 7, 90.
  mla: Paerschke, Ekaterina, et al. “Evolution of Electronic and Magnetic Properties
    of Sr₂IrO₄ under Strain.” <i>Npj Quantum Materials</i>, vol. 7, 90, Springer Nature,
    2022, doi:<a href="https://doi.org/10.1038/s41535-022-00496-w">10.1038/s41535-022-00496-w</a>.
  short: E. Paerschke, W.-C. Chen, R. Ray, C.-C. Chen, Npj Quantum Materials 7 (2022).
date_created: 2023-01-16T09:46:01Z
date_published: 2022-09-10T00:00:00Z
date_updated: 2023-08-04T09:23:43Z
day: '10'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s41535-022-00496-w
ec_funded: 1
external_id:
  isi:
  - '000852381200003'
file:
- access_level: open_access
  checksum: d93b477b5b95c0d1b8f9fef90a81f565
  content_type: application/pdf
  creator: dernst
  date_created: 2023-01-27T07:59:27Z
  date_updated: 2023-01-27T07:59:27Z
  file_id: '12414'
  file_name: 2022_NPJ_Paerschke.pdf
  file_size: 1852598
  relation: main_file
  success: 1
file_date_updated: 2023-01-27T07:59:27Z
has_accepted_license: '1'
intvolume: '         7'
isi: 1
keyword:
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: npj Quantum Materials
publication_identifier:
  eissn:
  - 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
  link:
  - relation: erratum
    url: https://doi.org/10.1038/s41535-022-00510-1
scopus_import: '1'
status: public
title: Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain
tmp:
  image: /images/cc_by.png
  legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
  name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 7
year: '2022'
...