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Title: Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4

Abstract

Materials that exhibit both strong spin–orbit coupling and electron correlation effects are predicted to host numerous new electronic states. One prominent example is the Jeff = 1/2 Mott state in Sr2IrO4, where introducing carriers is predicted to manifest high temperature superconductivity analogous to the S=1/2 Mott state of La2CuO4. While bulk super- conductivity currently remains elusive, anomalous quasiparticle behaviors paralleling those in the cuprates such as pseudogap formation and the formation of a d-wave gap are observed upon electron-doping Sr2IrO4. Here we establish a magnetic parallel between electron-doped Sr2IrO4 and hole-doped La2CuO4 by unveiling a spin density wave state in electron-doped Sr2IrO4. Our magnetic resonant X-ray scattering data reveal the presence of an incom- mensurate magnetic state reminiscent of the diagonal spin density wave state observed in the monolayer cuprate (La1-xSrx)2CuO4. Furthermore, this link supports the conjecture that the quenched Mott phases in electron-doped Sr2IrO4 and hole-doped La2CuO4 support common competing electronic phases.

Authors:
ORCiD logo [1];  [2];  [3];  [2];  [2];  [4];  [4];  [2]
  1. Boston College, Chestnut Hill, MA (United States); Univ. of California, Santa Barbara, CA (United States)
  2. Univ. of California, Santa Barbara, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Cornell Univ., Ithaca, NY (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1425217
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 9; Journal Issue: 1; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS

Citation Formats

Chen, Xiang, Schmehr, Julian L., Islam, Zahirul, Porter, Zach, Zoghlin, Eli, Finkelstein, Kenneth, Ruff, Jacob P. C., and Wilson, Stephen D. Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4. United States: N. p., 2018. Web. doi:10.1038/s41467-017-02647-1.
Chen, Xiang, Schmehr, Julian L., Islam, Zahirul, Porter, Zach, Zoghlin, Eli, Finkelstein, Kenneth, Ruff, Jacob P. C., & Wilson, Stephen D. Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4. United States. https://doi.org/10.1038/s41467-017-02647-1
Chen, Xiang, Schmehr, Julian L., Islam, Zahirul, Porter, Zach, Zoghlin, Eli, Finkelstein, Kenneth, Ruff, Jacob P. C., and Wilson, Stephen D. Tue . "Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4". United States. https://doi.org/10.1038/s41467-017-02647-1. https://www.osti.gov/servlets/purl/1425217.
@article{osti_1425217,
title = {Unidirectional spin density wave state in metallic (Sr1-xLax)2IrO4},
author = {Chen, Xiang and Schmehr, Julian L. and Islam, Zahirul and Porter, Zach and Zoghlin, Eli and Finkelstein, Kenneth and Ruff, Jacob P. C. and Wilson, Stephen D.},
abstractNote = {Materials that exhibit both strong spin–orbit coupling and electron correlation effects are predicted to host numerous new electronic states. One prominent example is the Jeff = 1/2 Mott state in Sr2IrO4, where introducing carriers is predicted to manifest high temperature superconductivity analogous to the S=1/2 Mott state of La2CuO4. While bulk super- conductivity currently remains elusive, anomalous quasiparticle behaviors paralleling those in the cuprates such as pseudogap formation and the formation of a d-wave gap are observed upon electron-doping Sr2IrO4. Here we establish a magnetic parallel between electron-doped Sr2IrO4 and hole-doped La2CuO4 by unveiling a spin density wave state in electron-doped Sr2IrO4. Our magnetic resonant X-ray scattering data reveal the presence of an incom- mensurate magnetic state reminiscent of the diagonal spin density wave state observed in the monolayer cuprate (La1-xSrx)2CuO4. Furthermore, this link supports the conjecture that the quenched Mott phases in electron-doped Sr2IrO4 and hole-doped La2CuO4 support common competing electronic phases.},
doi = {10.1038/s41467-017-02647-1},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Tue Jan 09 00:00:00 EST 2018},
month = {Tue Jan 09 00:00:00 EST 2018}
}

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Works referenced in this record:

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Works referencing / citing this record:

The J eff = 1/2 Antiferromagnet Sr 2 IrO 4 : A Golden Avenue toward New Physics and Functions
journal, October 2019


Atomic-scale fragmentation and collapse of antiferromagnetic order in a doped Mott insulator
journal, October 2019


Determination of the local structure of Sr 2−x M x IrO 4 (M = K, La) as a function of doping and temperature
journal, January 2018

  • Terashima, Kensei; Paris, Eugenio; Salas-Colera, Eduardo
  • Physical Chemistry Chemical Physics, Vol. 20, Issue 36
  • DOI: 10.1039/c8cp03756f

Interface-engineered hole doping in Sr 2 IrO 4 /LaNiO 3 heterostructure
journal, October 2019


Mott transition and collective charge pinning in electron doped Sr 2 IrO 4
journal, July 2018


Direct Visualization of Spatial Inhomogeneity of Spin Stripes Order in La1.72Sr0.28NiO4
journal, August 2019


Direct Visualization of Spatial Inhomogeneity of Spin Stripes Order in $\mathrm{La_{1.72}Sr_{0.28}NiO_{4}}$
text, January 2019

  • Campi, Gaetano; Poccia, Nicola; Joseph, Boby
  • Deutsches Elektronen-Synchrotron, DESY, Hamburg
  • DOI: 10.3204/pubdb-2019-03147

Stability of the Antiferromagnetic State in the Electron Doped Iridates
text, January 2018