Superconductivity in magnetically doped SrTiO3

Salmani-Rezaie, Salva; Galletti, Luca; Schumann, Timo; Russell, Ryan; Jeong, Hanbyeol; Li, Yuntian; Harter, John W.; Stemmer, Susanne

doi:10.1063/5.0052319

Title: Superconductivity in magnetically doped SrTiO₃

Abstract

Doped SrTiO₃ is a superconductor whose pairing mechanism is still not fully understood. The response of a superconductor to impurities has long been used to obtain insights into the nature of the superconducting state. Here, the superconductivity of SrTiO₃ films that are doped or alloyed with different rare earth ions, which carry a magnetic moment, is investigated. It is shown that large concentrations (up to a few percent) of rare earth ions with unpaired f-electrons, such as Sm and Eu, do not reduce the superconducting critical temperature and critical fields. The finding is independent of whether the rare earth ion acts as a dopant or is an isovalent impurity. The interactions between the superconducting condensate and the magnetic dopants that could result in the observed insensitivity to magnetic impurities are discussed.

Authors:

^[1];

^[1]; Schumann, Timo ^[1];

^[1]; Jeong, Hanbyeol ^[1];

^[1]; Harter, John W. ^[1];

^[1]

Univ. of California, Santa Barbara, CA (United States)

Publication Date:: Wed May 19 00:00:00 EDT 2021

Research Org.:: Univ. of California, Santa Barbara, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES); US Army Research Office (ARO); National Science Foundation (NSF)

OSTI Identifier:: 1783679

Alternate Identifier(s):: OSTI ID: 1783682; OSTI ID: 1970542

Grant/Contract Number:: SC0020305; FG02-02ER45994; SC0019414; W911NF-16-1-0361; DMR 1720256; DEFG02-02ER45994

Resource Type:: Accepted Manuscript

Journal Name:: Applied Physics Letters

Additional Journal Information:: Journal Volume: 118; Journal Issue: 20; Journal ID: ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; Doping; Epitaxy; Magnetic dipole moment; X-ray diffraction; Transition metal oxides; Phase transitions; Superconductivity; Superconductors; Electric measurements

Citation Formats


                    Salmani-Rezaie, Salva, Galletti, Luca, Schumann, Timo, Russell, Ryan, Jeong, Hanbyeol, Li, Yuntian, Harter, John W., and Stemmer, Susanne. Superconductivity in magnetically doped SrTiO3.  United States: N. p., 2021. 
Web.  doi:10.1063/5.0052319.

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                    Salmani-Rezaie, Salva, Galletti, Luca, Schumann, Timo, Russell, Ryan, Jeong, Hanbyeol, Li, Yuntian, Harter, John W., & Stemmer, Susanne. Superconductivity in magnetically doped SrTiO3.  United States.  https://doi.org/10.1063/5.0052319

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                    Salmani-Rezaie, Salva, Galletti, Luca, Schumann, Timo, Russell, Ryan, Jeong, Hanbyeol, Li, Yuntian, Harter, John W., and Stemmer, Susanne. Wed .  
"Superconductivity in magnetically doped SrTiO3".  United States.  https://doi.org/10.1063/5.0052319.  https://www.osti.gov/servlets/purl/1783679.

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@article{osti_1783679,

  title        = {Superconductivity in magnetically doped SrTiO3},

  author       = {Salmani-Rezaie, Salva and Galletti, Luca and Schumann, Timo and Russell, Ryan and Jeong, Hanbyeol and Li, Yuntian and Harter, John W. and Stemmer, Susanne},

  abstractNote = {Doped SrTiO3 is a superconductor whose pairing mechanism is still not fully understood. The response of a superconductor to impurities has long been used to obtain insights into the nature of the superconducting state. Here, the superconductivity of SrTiO3 films that are doped or alloyed with different rare earth ions, which carry a magnetic moment, is investigated. It is shown that large concentrations (up to a few percent) of rare earth ions with unpaired f-electrons, such as Sm and Eu, do not reduce the superconducting critical temperature and critical fields. The finding is independent of whether the rare earth ion acts as a dopant or is an isovalent impurity. The interactions between the superconducting condensate and the magnetic dopants that could result in the observed insensitivity to magnetic impurities are discussed.},

  doi          = {10.1063/5.0052319},

  journal      = {Applied Physics Letters},

  number       = 20,

  volume       = 118,

  place        = {United States},

  year         = {Wed May 19 00:00:00 EDT 2021},

  month        = {Wed May 19 00:00:00 EDT 2021}

}

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Title: Superconductivity in magnetically doped SrTiO3

Abstract

Citation Formats

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Title: Superconductivity in magnetically doped SrTiO₃

Superconducting and Ferromagnetic Phases in ${SrTiO}_{3} / {LaAlO}_{3}$ Oxide Interface Structures: Possibility of Finite Momentum Pairing
journal, March 2012

Impurity-induced states in conventional and unconventional superconductors
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Possible signatures of mixed-parity superconductivity in doped polar $SrTi O_{3}$ films
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