---
_id: '7063'
abstract:
- lang: eng
  text: The high-pressure synthesis and incommensurately modulated structure are reported
    for the new compound Sr2Pt8−xAs, with x = 0.715 (5). The structure consists of
    Sr2Pt3As layers alternating with Pt-only corrugated grids. Ab initio calculations
    predict a metallic character with a dominant role of the Pt d electrons. The electrical
    resistivity (ρ) and Seebeck coefficient confirm the metallic character, but surprisingly,
    ρ showed a near-flat temperature dependence. This observation fits the description
    of the Mooij correlation for electrical resistivity in disordered metals, originally
    developed for statistically distributed point defects. The discussed material
    has a long-range crystallographic order, but the high concentration of Pt vacancies,
    incommensurately ordered, strongly influences the electronic conduction properties.
    This result extends the range of validity of the Mooij correlation to long-range
    ordered incommensurately modulated vacancies. Motivated by the layered structure,
    the resistivity anisotropy was measured in a focused-ion-beam micro-fabricated
    well oriented single crystal. A low resistivity anisotropy indicates that the
    layers are electrically coupled and conduction channels along different directions
    are intermixed.
article_processing_charge: No
article_type: original
author:
- first_name: Edoardo
  full_name: Martino, Edoardo
  last_name: Martino
- first_name: Alla
  full_name: Arakcheeva, Alla
  last_name: Arakcheeva
- first_name: Gabriel
  full_name: Autès, Gabriel
  last_name: Autès
- first_name: Andrea
  full_name: Pisoni, Andrea
  last_name: Pisoni
- first_name: Maja D.
  full_name: Bachmann, Maja D.
  last_name: Bachmann
- first_name: Kimberly A
  full_name: Modic, Kimberly A
  id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
  last_name: Modic
  orcid: 0000-0001-9760-3147
- first_name: Toni
  full_name: Helm, Toni
  last_name: Helm
- first_name: Oleg V.
  full_name: Yazyev, Oleg V.
  last_name: Yazyev
- first_name: Philip J. W.
  full_name: Moll, Philip J. W.
  last_name: Moll
- first_name: László
  full_name: Forró, László
  last_name: Forró
- first_name: Sergiy
  full_name: Katrych, Sergiy
  last_name: Katrych
citation:
  ama: 'Martino E, Arakcheeva A, Autès G, et al. Sr2Pt8−xAs: A layered incommensurately
    modulated metal with saturated resistivity. <i>IUCrJ</i>. 2018;5(4):470-477. doi:<a
    href="https://doi.org/10.1107/s2052252518007303">10.1107/s2052252518007303</a>'
  apa: 'Martino, E., Arakcheeva, A., Autès, G., Pisoni, A., Bachmann, M. D., Modic,
    K. A., … Katrych, S. (2018). Sr2Pt8−xAs: A layered incommensurately modulated
    metal with saturated resistivity. <i>IUCrJ</i>. International Union of Crystallography
    (IUCr). <a href="https://doi.org/10.1107/s2052252518007303">https://doi.org/10.1107/s2052252518007303</a>'
  chicago: 'Martino, Edoardo, Alla Arakcheeva, Gabriel Autès, Andrea Pisoni, Maja
    D. Bachmann, Kimberly A Modic, Toni Helm, et al. “Sr2Pt8−xAs: A Layered Incommensurately
    Modulated Metal with Saturated Resistivity.” <i>IUCrJ</i>. International Union
    of Crystallography (IUCr), 2018. <a href="https://doi.org/10.1107/s2052252518007303">https://doi.org/10.1107/s2052252518007303</a>.'
  ieee: 'E. Martino <i>et al.</i>, “Sr2Pt8−xAs: A layered incommensurately modulated
    metal with saturated resistivity,” <i>IUCrJ</i>, vol. 5, no. 4. International
    Union of Crystallography (IUCr), pp. 470–477, 2018.'
  ista: 'Martino E, Arakcheeva A, Autès G, Pisoni A, Bachmann MD, Modic KA, Helm T,
    Yazyev OV, Moll PJW, Forró L, Katrych S. 2018. Sr2Pt8−xAs: A layered incommensurately
    modulated metal with saturated resistivity. IUCrJ. 5(4), 470–477.'
  mla: 'Martino, Edoardo, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated
    Metal with Saturated Resistivity.” <i>IUCrJ</i>, vol. 5, no. 4, International
    Union of Crystallography (IUCr), 2018, pp. 470–77, doi:<a href="https://doi.org/10.1107/s2052252518007303">10.1107/s2052252518007303</a>.'
  short: E. Martino, A. Arakcheeva, G. Autès, A. Pisoni, M.D. Bachmann, K.A. Modic,
    T. Helm, O.V. Yazyev, P.J.W. Moll, L. Forró, S. Katrych, IUCrJ 5 (2018) 470–477.
date_created: 2019-11-19T13:11:15Z
date_published: 2018-07-01T00:00:00Z
date_updated: 2021-01-12T08:11:38Z
day: '01'
ddc:
- '530'
doi: 10.1107/s2052252518007303
extern: '1'
file:
- access_level: open_access
  checksum: 5c6180c7d19da599dd50a067eb2efd50
  content_type: application/pdf
  creator: dernst
  date_created: 2019-11-20T14:00:27Z
  date_updated: 2020-07-14T12:47:48Z
  file_id: '7090'
  file_name: 2018_IUCrJ_Martino.pdf
  file_size: 1563353
  relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: '         5'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 470-477
publication: IUCrJ
publication_identifier:
  eissn:
  - 2052-2525
publication_status: published
publisher: International Union of Crystallography (IUCr)
quality_controlled: '1'
status: public
title: 'Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity'
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: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2018'
...