# Superstructures and magnetic order in heavily Cu-substituted (Fe1−𝑥⁢Cu𝑥)1+𝑦⁢Te

https://mdr.nims.go.jp/datasets/9c245379-e103-45ad-9436-c856dd101039

## File

- [es2023oct22_513.pdf](https://mdr.nims.go.jp/filesets/9c41e8ad-a19f-4f96-93b8-a091a9eb97c0/download) ([Detail](https://mdr.nims.go.jp/filesets/9c41e8ad-a19f-4f96-93b8-a091a9eb97c0.md))

## Id

9c245379-e103-45ad-9436-c856dd101039

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-08T08:41:16.235899Z

## Updated at

2024-12-24T03:09:02.763571Z

## Published at

2024-11-19T07:30:51.139705Z

## Doi

https://doi.org/10.48505/nims.4991

## First published url

https://doi.org/10.1103/physrevb.109.045142

## Date published

2024-01-23

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

authors_original

## Collection



## Title

- title: "Superstructures and magnetic order in heavily Cu-substituted (Fe1−\U0001D465⁢Cu\U0001D465)1+\U0001D466⁢Te"
  title_type: original
  lang: en

## Description

- description: Most iron-based superconductors exhibit stripe-type magnetism, characterized
    by the ordering vector Q = . In contrast, Fe1+yTe, the parent compound of the
    Fe1+yTe1−xSex superconductors, exhibits double-stripe magnetic order associated
    with the ordering vector Q = . Here, we use elastic neutron scattering to investigate
    heavily Cu-substituted (Fe1−xCux)1+yTe compounds and reveal that (1) for x ≳ 0.4,
    short-range magnetic order emerges around the stripe-type vector at Q = (x) with
    δ ≈ 0.05; (2)the short-range magnetic order is associated with a superstructure
    modulation at Q = , with the magnetic correlation length shorter than that for
    the superstructure; and (3) for x ≳ 0.55, we observe an additional intergrown
    phase with higher Cu content, characterized by a superstructure modulation vector
    Q =  and magnetic peaks at Q = . The positions of superstructure peaks suggest
    that relative to the tetragonal unit cell of Fe1+yTe, heavy Cu substitution leads
    to Fe-Cu orderings that expand the unit cell by √2× 3√2 times in the ab plane,
    corroborated by first-principles calculations that suggest the formation of spin
    chains and spin ladders. Our findings show that stripe-type magnetism is common
    in magnetically diluted iron pnictides and chalcogenides, despite the varying
    associated atomic orderings.
  description_type: abstract
  lang: eng
- description: "Most iron-based superconductors exhibit stripe-type magnetism, characterized
    by the ordering vector Q = . In contrast, Fe1+yTe, the parent compound of the
    Fe1+yTe1−xSex superconductors, exhibits double-stripe magnetic order associated
    with the ordering vector Q = . Here, we use elastic neutron scattering to\r\ninvestigate
    heavily Cu-substituted (Fe1−xCux)1+yTe compounds and reveal that (1) for x ≳ 0.4,
    short-range\r\n magnetic order emerges around the stripe-type vector at Q = (x)
    with δ ≈ 0.05; (2)the short-range magnetic order is associated with a superstructure
    modulation at Q = , with the magnetic correlation length shorter than that for
    the superstructure; and (3) for x ≳ 0.55, we observe an additional intergrown
    phase with higher Cu content, characterized by a superstructure modulation vector
    Q =  and magnetic peaks at Q = . The positions of superstructure peaks suggest
    that relative to the tetragonal unit cell of Fe1+yTe, heavy Cu substitution leads
    to Fe-Cu orderings that expand the unit cell by √2× 3√2 times in the ab plane,
    corroborated by first-principles calculations that suggest the formation of spin
    chains and spin ladders. Our findings show that stripe-type magnetism is common
    in magnetically diluted iron pnictides and chalcogenides, despite the varying
    associated atomic orderings."
  description_type: abstract
  lang: eng
- description: "Most iron-based superconductors exhibit stripe-type magnetism, characterized
    by the ordering vector Q = . In contrast, Fe1+yTe, the parent compound of the
    Fe1+yTe1−xSex superconductors, exhibits double-stripe magnetic order associated
    with the ordering vector Q = . Here, we use elastic neutron scattering to\r\ninvestigate
    heavily Cu-substituted (Fe1−xCux)1+yTe compounds and reveal that (1) for x ≳ 0.4,
    short-range\r\n magnetic order emerges around the stripe-type vector at Q = (x)
    with δ ≈ 0.05; (2)the short-range magnetic order is associated with a superstructure
    modulation at Q = , with the magnetic correlation length shorter than that for
    the superstructure; and (3) for x ≳ 0.55, we observe an additional intergrown
    phase with higher Cu content, characterized by a superstructure modulation vector
    Q =  and magnetic peaks at Q = . The positions of superstructure peaks suggest
    that relative to the tetragonal unit cell of Fe1+yTe, heavy Cu substitution leads
    to Fe-Cu orderings that expand the unit cell by √2× 3√2 times in the ab plane,
    corroborated by first-principles calculations that suggest the formation of spin
    chains and spin ladders. Our findings show that stripe-type magnetism is common
    in magnetically diluted iron pnictides and chalcogenides, despite the varying
    associated atomic orderings."
  description_type: abstract
  lang: eng
- description: "Most iron-based superconductors exhibit stripe-type magnetism, characterized
    by the ordering vector Q = . In contrast, Fe1+yTe, the parent compound of the
    Fe1+yTe1−xSex superconductors, exhibits double-stripe magnetic order associated
    with the ordering vector Q = . Here, we use elastic neutron scattering to\r\ninvestigate
    heavily Cu-substituted (Fe1−xCux)1+yTe compounds and reveal that (1) for x ≳ 0.4,
    short-range\r\n magnetic order emerges around the stripe-type vector at Q = (x)
    with δ ≈ 0.05; (2)the short-range magnetic order is associated with a superstructure
    modulation at Q = , with the magnetic correlation length shorter than that for
    the superstructure; and (3) for x ≳ 0.55, we observe an additional intergrown
    phase with higher Cu content, characterized by a superstructure modulation vector
    Q =  and magnetic peaks at Q = . The positions of superstructure peaks suggest
    that relative to the tetragonal unit cell of Fe1+yTe, heavy Cu substitution leads
    to Fe-Cu orderings that expand the unit cell by √2× 3√2 times in the ab plane,
    corroborated by first-principles calculations that suggest the formation of spin
    chains and spin ladders. Our findings show that stripe-type magnetism is common
    in magnetically diluted iron pnictides and chalcogenides, despite the varying
    associated atomic orderings."
  description_type: abstract
  lang: eng
- description: "Most iron-based superconductors exhibit stripe-type magnetism, characterized
    by the ordering vector Q = . In contrast, Fe1+yTe, the parent compound of the
    Fe1+yTe1−xSex superconductors, exhibits double-stripe magnetic order associated
    with the ordering vector Q = . Here, we use elastic neutron scattering to\r\ninvestigate
    heavily Cu-substituted (Fe1−xCux)1+yTe compounds and reveal that (1) for x ≳ 0.4,
    short-range\r\n magnetic order emerges around the stripe-type vector at Q = (x)
    with δ ≈ 0.05; (2)the short-range magnetic order is associated with a superstructure
    modulation at Q = , with the magnetic correlation length shorter than that for
    the superstructure; and (3) for x ≳ 0.55, we observe an additional intergrown
    phase with higher Cu content, characterized by a superstructure modulation vector
    Q =  and magnetic peaks at Q = . The positions of superstructure peaks suggest
    that relative to the tetragonal unit cell of Fe1+yTe, heavy Cu substitution leads
    to Fe-Cu orderings that expand the unit cell by √2× 3√2 times in the ab plane,
    corroborated by first-principles calculations that suggest the formation of spin
    chains and spin ladders. Our findings show that stripe-type magnetism is common
    in magnetically diluted iron pnictides and chalcogenides, despite the varying
    associated atomic orderings."
  description_type: abstract
  lang: eng

## Creator

- name: Saizheng Cao
  role: author
  orcid: https://orcid.org/0000-0002-1201-6961
- name: Xin Ma
  role: author
- name: Dongsheng Yuan
  role: author
  orcid: https://orcid.org/0000-0001-9650-2272
- name: Zhen Tao
  role: author
- name: Xiang Chen
  role: author
- name: Yu He
  role: author
- name: Patrick N. Valdivia
  role: author
- name: Shan Wu
  role: author
  orcid: https://orcid.org/0000-0001-9935-0657
- name: Hang Su
  role: author
- name: Wei Tian
  role: author
- name: Adam A. Aczel
  role: author
  orcid: https://orcid.org/0000-0003-1964-1943
- name: Yaohua Liu
  role: author
  orcid: https://orcid.org/0000-0002-5867-5065
- name: Xiaoping Wang
  role: author
  orcid: https://orcid.org/0000-0001-7143-8112
- name: Zhijun Xu
  role: author
- name: Huiqiu Yuan
  role: author
- name: Edith Bourret-Courchesne
  role: author
  orcid: https://orcid.org/0000-0002-8487-0112
- name: Chao Cao
  role: author
- name: Xingye Lu
  role: author
- name: Robert Birgeneau
  role: author
- name: Yu Song
  role: author
  orcid: https://orcid.org/0000-0002-8835-9071

## Contact agent



## Publisher



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## Keyword

- subject: Magnetic order
  schema: not_defined
- subject: Structural properties
  schema: not_defined
- subject: Iron-based superconductors
  schema: not_defined
- subject: Neutron scattering
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: PHYSICAL REVIEW B
  issn: '24699950'
  volume: '109'
  issue: '4'
  article_number: '045142'

## Conference



## Related item



## Funding

- funder_name: Zhejiang University
- identifier: 2022YFA1402200
  funder_name: National Key Research and Development Program of China
- identifier: 2021C01002
  funder_name: National Key Research and Development Program of China
- funder_name: Beijing Normal University
- identifier: '12274363'
  funder_name: National Natural Science Foundation of China
- identifier: '12274364'
  funder_name: National Natural Science Foundation of China
- identifier: '12174029'
  funder_name: National Natural Science Foundation of China
- funder_name: University of California
- funder_name: Lawrence Berkeley National Laboratory
- funder_name: Office of Science
- funder_name: Basic Energy Sciences
- identifier: DE-AC02-05-CH11231
  funder_name: U.S. Department of Energy
- funder_name: Oak Ridge National Laboratory

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## Fileset

- id: 9c41e8ad-a19f-4f96-93b8-a091a9eb97c0
  filename: es2023oct22_513.pdf
  content_type: application/pdf
  size: 2445343
  md5: 4dc5cba4cd75fa4a410a05f728a6a818

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