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Title: Control of dopant crystallinity in electrochemically treated cuprate thin films

Journal Article · · Physical Review Materials
 [1];  [2];  [3];  [3];  [4];  [3];  [5];  [5];  [5];  [6];  [6];  [4];  [4];  [4];  [4];  [4];  [4];  [4];  [3]
  1. Univ. of California, San Diego, CA (United States). Dept. of Physics; Univ. of California, Berkeley, CA (United States). Dept. of Physics
  2. Max Planck Inst. for Solid State Research, Stuttgart (Germany); Helmholtz-Zentrum Berlin für Materialien und Energie (HZB), (Germany). Wilhelm-Conrad-Röntgen-Campus BESSY II
  3. Univ. of California, Berkeley, CA (United States). Dept. of Physics
  4. Max Planck Inst. for Solid State Research, Stuttgart (Germany)
  5. SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Synchrotron Radiation Lightsource (SSRL)
  6. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.

We present a methodology based on ex situ (postgrowth) electrochemistry to control the oxygen concentration in thin films of the superconducting oxide La2CuO4+y grown epitaxially on substrates of isostructural LaSrAlO4. The superconducting transition temperature, which depends on the oxygen concentration, can be tuned by adjusting the pH level of the base solution used for the electrochemical reaction. As our main finding, we demonstrate that the dopant oxygens can either occupy the interstitial layer in an orientationally disordered state or organize into a crystalline phase via a mechanism in which dopant oxygens are inserted into the substrate, changing the lattice symmetry of both the substrate and the epitaxial film. Finally, we discuss this mechanism, and we describe the resulting methodology as a platform to be explored in thin films of other transition-metal oxides.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
SC0012704
OSTI ID:
1543398
Report Number(s):
BNL--211824-2019-JAAM
Journal Information:
Physical Review Materials, Journal Name: Physical Review Materials Journal Issue: 6 Vol. 3; ISSN PRMHAR; ISSN 2475-9953
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (42)

Additional Oxygen Ordering in "La2NiO4.25" (La8Ni4O17) journal October 1993
Additional Oxygen Ordering in "La2NiO4.25" (La8Ni4O17) journal October 1993
Electrochemical oxidation of La2CuO4 thin films grown by molecular beam epitaxy journal August 1993
Stripe correlation of tilts and superconductivity in La2CuO4+Σ journal August 1997
Intercalation and staging behavior in super-oxygenated La2CuO4 + δ journal December 1996
Oxide-based RRAM materials for neuromorphic computing journal February 2018
Metal-insulator transitions journal June 1991
Synthesis, characterization, and superconducting and magnetic properties of electrochemically oxidized La2CuO4+δ and La2−xSrxCuO4+δ (0.01 ≤ x ≤ 0.33, 0.01 ≤ δ ≤ 0.36) journal July 1992
Electrochemical oxygen intercalation into oxide networks journal January 1992
Perovskite oxides applications in high temperature oxygen separation, solid oxide fuel cell and membrane reactor: A review journal July 2017
Scale-free structural organization of oxygen interstitials in La2CuO4+y journal August 2010
From quantum matter to high-temperature superconductivity in copper oxides journal February 2015
Charge-compensation in 3d-transition-metal-oxide intercalation cathodes through the generation of localized electron holes on oxygen journal March 2016
Evolution and control of oxygen order in a cuprate superconductor journal August 2011
Emergent phenomena at oxide interfaces journal January 2012
Whither the oxide interface journal January 2012
Stabilization of three-dimensional charge order in YBa2Cu3O6+x via epitaxial growth journal July 2018
A new spin for oxide interfaces journal April 2018
Structural studies of the bond-orientational order and hexatic–smectic transition in liquid crystals of various compositions journal January 2017
Perovskite substrates boost the thermopower of cobaltate thin films at high temperatures journal June 2017
Liquids, Crystals and Liquid Crystals journal July 1989
c -axis textured La 2 CuO 4 thin films prepared by NaClO oxidation: I. Superconducting and structural properties journal June 2004
Electrically Induced Multiple Metal-Insulator Transitions in Oxide Nanodevices journal November 2017
Structure of the superconducting La 2 CuO 4 + δ phases (δ≊0.08,0.12) prepared by electrochemical oxidation journal July 1993
Structure of La 2 NiO 4.18 journal January 1994
Growth, microstructure, and electrochemical oxidation of MBE-grown c -axis La 2 CuO 4 thin films journal September 1996
Electrochemistry and staging in La 2 CuO 4 + δ journal June 1998
Neutron-scattering study of spin-density wave order in the superconducting state of excess-oxygen-doped La 2 CuO 4 + y journal August 1999
Neutron scattering study of the effects of dopant disorder on the superconductivity and magnetic order in stage-4 La 2 CuO 4 + y journal January 2004
Synchrotron x-ray studies of vitreous SiO 2 over Si(001). I. Anisotropic glass contribution journal January 2005
Enhancement of the superconducting critical temperature of Sr 2 CuO 3 + δ up to 95 K by ordering dopant atoms journal September 2006
Structure of vacancy-ordered single-crystalline superconducting potassium iron selenide journal April 2011
Elucidating the magnetic and superconducting phases in the alkali metal intercalated iron chalcogenides journal February 2016
Evidence of In-Plane Superstructure Formation in Phase-Separated and Staged Single Crystal La 2 CuO 4 + δ journal April 1996
Metal-insulator transitions journal October 1998
Incommensurate Spin Fluctuations in High-Transition Temperature Superconductors journal August 1997
Scattering and Pairing in Cuprate Superconductors journal August 2010
Two-Dimensional Electron Gases at Oxide Interfaces journal November 2008
Scattering and Pairing in Cuprate Superconductors text January 2010
Evolution and Control of Oxygen Order in a Cuprate Superconductor text January 2011
Structural studies of the bond-orientational order and hexatic-smectic transition in liquid crystals of various compositions preprint January 2017
Perovskite Substrates Boost the Thermopower of Cobaltate Thin Films at High Temperatures text January 2017

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