Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping

Ortmann, J. E.; Liu, J. Y.; Hu, J.; Zhu, M.; Peng, J.; Matsuda, M.; Ke, X.; Mao, Z. Q.

doi:10.1038/srep02950

Title: Competition Between Antiferromagnetism and Ferromagnetism in Sr₂RuO₄ Probed by Mn and Co Doping

Abstract

Spin-triplet superconductivity in Sr₂RuO₄ has attracted enormous interest. Like other unconventional superconductors, superconductivity in Sr₂RuO₄ is in close proximity to magnetic instability. Undoped Sr₂RuO₄ exhibits incommensurate antiferromagnetic (AFM) fluctuations, which can evolve into static, short-range AFM order via Ti doping. Moreover, weak ferromagnetic (FM) coupling in Sr₂RuO₄ has also been suggested by NMR/neutron scattering experiments and studies on Ca_2–xSr_xRuO₄ and Sr_2–yLa_yRuO₄, implying orbital dependent magnetism. We report bulk static, short-range FM order in Sr₂RuO₄ triggered by <2% Co doping, showing superconductivity in Sr₂RuO₄ is much closer to FM instability than previously reported in Ca_2–xSr_xRuO₄. We also find Mn doping can effectively establish incommensurate AFM order, with TN ~ 50 K for 3% Mn doping. These new results place Sr₂RuO₄ in a unique situation where superconductivity lies directly on the borderline of two distinct magnetic states, highlighting the important role of competing magnetic fluctuations in determining superconducting properties of Sr₂RuO₄.

Authors:

Ortmann, J. E. ^[1]; Liu, J. Y. ^[1]; Hu, J. ^[1]; Zhu, M. ^[2]; Peng, J. ^[1]; Matsuda, M. ^[3]; Ke, X. ^[2]; Mao, Z. Q. ^[1]

Tulane Univ., New Orleans, LA (United States). Dept. of Physics and Engineering Physics
Michigan State Univ., East Lansing, MI (United States). Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Tue Oct 15 00:00:00 EDT 2013

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1624660

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Scientific Reports

Additional Journal Information:: Journal Volume: 3; Journal Issue: 1; Journal ID: ISSN 2045-2322

Publisher:: Nature Publishing Group

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Electronic properties and materials; Magnetic properties and materials; Superconducting properties and materials

Citation Formats


                    Ortmann, J. E., Liu, J. Y., Hu, J., Zhu, M., Peng, J., Matsuda, M., Ke, X., and Mao, Z. Q. Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping.  United States: N. p., 2013. 
Web.  doi:10.1038/srep02950.

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                    Ortmann, J. E., Liu, J. Y., Hu, J., Zhu, M., Peng, J., Matsuda, M., Ke, X., & Mao, Z. Q. Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping.  United States.  https://doi.org/10.1038/srep02950

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                    Ortmann, J. E., Liu, J. Y., Hu, J., Zhu, M., Peng, J., Matsuda, M., Ke, X., and Mao, Z. Q. Tue .  
"Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping".  United States.  https://doi.org/10.1038/srep02950.  https://www.osti.gov/servlets/purl/1624660.

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@article{osti_1624660,

  title        = {Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping},

  author       = {Ortmann, J. E. and Liu, J. Y. and Hu, J. and Zhu, M. and Peng, J. and Matsuda, M. and Ke, X. and Mao, Z. Q.},

  abstractNote = {Spin-triplet superconductivity in Sr2RuO4 has attracted enormous interest. Like other unconventional superconductors, superconductivity in Sr2RuO4 is in close proximity to magnetic instability. Undoped Sr2RuO4 exhibits incommensurate antiferromagnetic (AFM) fluctuations, which can evolve into static, short-range AFM order via Ti doping. Moreover, weak ferromagnetic (FM) coupling in Sr2RuO4 has also been suggested by NMR/neutron scattering experiments and studies on Ca2–xSrxRuO4 and Sr2–yLayRuO4, implying orbital dependent magnetism. We report bulk static, short-range FM order in Sr2RuO4 triggered by <2% Co doping, showing superconductivity in Sr2RuO4 is much closer to FM instability than previously reported in Ca2–xSrxRuO4. We also find Mn doping can effectively establish incommensurate AFM order, with TN ~ 50 K for 3% Mn doping. These new results place Sr2RuO4 in a unique situation where superconductivity lies directly on the borderline of two distinct magnetic states, highlighting the important role of competing magnetic fluctuations in determining superconducting properties of Sr2RuO4.},

  doi          = {10.1038/srep02950},

  journal      = {Scientific Reports},

  number       = 1,

  volume       = 3,

  place        = {United States},

  year         = {Tue Oct 15 00:00:00 EDT 2013},

  month        = {Tue Oct 15 00:00:00 EDT 2013}

}

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Works referencing / citing this record:

Time Reversal Symmetry Breaking Superconductors: Sr2RuO4 and Beyond
journal, May 2019

Wysokiński, Karol Izydor
Condensed Matter, Vol. 4, Issue 2
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Title: Competition Between Antiferromagnetism and Ferromagnetism in Sr2RuO4 Probed by Mn and Co Doping

Abstract

Citation Formats

Observation of anomalous temperature dependence of the critical current in P b / S r 2 RuO 4 / Pb junctions journal, February 1999

Heavy Fermion Superconductivity and Magnetic Order in Noncentrosymmetric C e P t 3 S i journal, January 2004

Incommensurate Magnetic Ordering in Sr 2 Ru 1 − x Ti x O 4 journal, April 2002

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New magnetic phase diagram of (Sr,Ca)2RuO4 journal, February 2012

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Inelastic neutron scattering study of magnetic excitations in Sr 2 RuO 4 journal, August 2002

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Magnetic phase diagram of Ca 2 − x Sr x RuO 4 governed by structural distortions journal, June 2001

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Antiferromagnetism in La 2 CuO 4 − y journal, June 1987

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Spin-triplet superconductivity in Sr2RuO4 identified by 17O Knight shift journal, December 1998

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Non-Fermi-Liquid Behavior in S r 2 R u O 4 with Nonmagnetic Impurities journal, August 2002

The superconductivity of Sr 2 RuO 4 and the physics of spin-triplet pairing journal, May 2003

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Observation of Half-Height Magnetization Steps in Sr2RuO4 journal, January 2011

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Title: Competition Between Antiferromagnetism and Ferromagnetism in Sr₂RuO₄ Probed by Mn and Co Doping

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journal, February 1999

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Orbital Dependent Superconductivity in ${Sr}_{2} {RuO}_{4}$
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Extremely Strong Dependence of Superconductivity on Disorder in ${Sr}_{2} {RuO}_{4}$
journal, January 1998

Inelastic neutron scattering study of magnetic excitations in ${Sr}_{2} {RuO}_{4}$
journal, August 2002

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Quasi-two-dimensional Fermi liquid properties of the unconventional superconductor Sr ₂ RuO ₄
journal, November 2003

Magnetic phase diagram of ${Ca}_{2 - x} {Sr}_{x} {RuO}_{4}$ governed by structural distortions
journal, June 2001

Dynamical Superconducting Order Parameter Domains in Sr2RuO4
journal, November 2006

Magnetic order close to superconductivity in the iron-based layered LaO1-xF x FeAs systems
journal, May 2008

High Resolution Polar Kerr Effect Measurements of ${Sr}_{2} {RuO}_{4}$ : Evidence for Broken Time-Reversal Symmetry in the Superconducting State
journal, October 2006

Evidence for Incommensurate Spin Fluctuations in ${Sr}_{2} {RuO}_{4}$
journal, October 1999

Model for Unconventional Superconductivity of ${Sr}_{2} {RuO}_{4}$ : Effect of Impurity Scattering on Time-Reversal Breaking Triplet Pairing with a Tiny Gap
journal, August 1999

Observation of Half-Height Magnetization Steps in Sr2RuO4
journal, January 2011

Band-selective modification of the magnetic fluctuations in ${Sr}_{2} {RuO}_{4}$ : A study of substitution effects
journal, October 2004

Time-reversal symmetry-breaking superconductivity in Sr2RuO4
journal, August 1998

Competitions in Layered Ruthenates: Ferromagnetism versus Antiferromagnetism and Triplet versus Singlet Pairing
journal, May 1999

${}^{17}O$ NMR Evidence for Orbital Dependent Ferromagnetic Correlations in ${Sr}_{2} {RuO}_{4}$
journal, October 1998

Gap Structure of the Spin-Triplet Superconductor ${S r}_{2} {R u O}_{4}$ Determined from the Field-Orientation Dependence of the Specific Heat
journal, January 2004

Superconductivity in a layered perovskite without copper
journal, December 1994

Rigid-band shift of the Fermi level in the strongly correlated metal: ${Sr}_{2 - y} {La}_{y} {RuO}_{4}$
journal, August 2004

Antiferromagnetism in ${La}_{2}$ ${CuO}_{4 - y}$
journal, June 1987

Roles of Electron Correlations in the Spin-Triplet Superconductivity of Sr ₂ RuO ₄
journal, August 2002

Spin-triplet superconductivity in Sr2RuO4 identified by 17O Knight shift
journal, December 1998

Odd-Parity Superconductivity in Sr2RuO4
journal, November 2004

Non-Fermi-Liquid Behavior in $S r_{2} R u O_{4}$ with Nonmagnetic Impurities
journal, August 2002

The superconductivity of ${Sr}_{2} {RuO}_{4}$ and the physics of spin-triplet pairing
journal, May 2003

Magnetic ordering in ${Sr}_{2} {RuO}_{4}$ induced by nonmagnetic impurities
journal, April 2001

New magnetic phase diagram of (Sr,Ca)2RuO4
journal, February 2012

Heavy-Mass Fermi Liquid near a Ferromagnetic Instability in Layered Ruthenates
journal, April 2003

Observation of Half-Height Magnetization Steps in Sr2RuO4
journal, January 2011

Magnetic properties of SrRuO ₃ Single Crystal
journal, December 1976

Magnetic Order versus superconductivity in the Iron-based layered La(O1-xFx)FeAs systems
text, January 2008

Critical thickness for itinerant ferromagnetism in ultrathin films of SrRuO$_3$
text, January 2008

Orbital dependent superconductivity in Sr_2RuO_4
text, January 1997

Time Reversal Symmetry Breaking Superconductors: Sr2RuO4 and Beyond
journal, May 2019

Spectroscopic evidence for strong quantum spin fluctuations with itinerant character in ${YFe}_{2} {Ge}_{2}$
journal, March 2015