Growth and structural characterization of large superconducting crystals of La2-xCa1+xCu2O6

Schneeloch, J. A.; Guguchia, Z.; Stone, Matthew B.; Tian, Wei; Zhong, Ruidan; Mohanty, K. M.; Xu, Guangyong; Gu, Genda D.; Tranquada, John M.

doi:10.1103/PhysRevMaterials.1.074801

Title: Growth and structural characterization of large superconducting crystals of ${La}_{2 - x} {Ca}_{1 + x} {Cu}_{2} O_{6}$

Abstract

Large crystals of La2-xCa1+xCu2O6 (La-Ca-2126) with x=0.10 and 0.15 have been grown and converted to bulk superconductors by high-pressure oxygen annealing. The superconducting transition temperature, Tc, is as high as 55 K; this can be raised to 60 K by postannealing in air. Here we present structural and magnetic characterizations of these crystals using neutron scattering and muon spin rotation techniques. While the as-grown, nonsuperconducting crystals are single phase, we find that the superconducting crystals contain three phases forming coherent domains stacked along the c axis: the dominant La-Ca-2126 phase, very thin (1.5 unit-cell) intergrowths of La2CuO4, and an antiferromagnetic La8Cu8O20 phase. We propose that the formation and segregation of the latter phases increases the Ca concentration of the La-Ca-2126, thus providing the hole doping that supports superconductivity.

Authors:

Schneeloch, J. A. ^[1]; Guguchia, Z. ^[2];

^[3];

^[3]; Zhong, Ruidan ^[4]; Mohanty, K. M. ^[1]; Xu, Guangyong ^[1]; Gu, Genda D. ^[1]; Tranquada, John M. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Columbia Univ., New York, NY (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Brookhaven National Lab. (BNL), Upton, NY (United States); Stony Brook Univ., NY (United States)

Publication Date:: 2017-12-01

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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

OSTI Identifier:: 1412763

Alternate Identifier(s):: OSTI ID: 1411104; OSTI ID: 1468095

Report Number(s):: BNL-114738-2017-JA
Journal ID: ISSN 2475-9953; PRMHAR; R&D Project: PO010; KC0201060; TRN: US1800352

Grant/Contract Number:: SC0012704; AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Materials

Additional Journal Information:: Journal Volume: 1; Journal Issue: 7; Journal ID: ISSN 2475-9953

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Schneeloch, J. A., Guguchia, Z., Stone, Matthew B., Tian, Wei, Zhong, Ruidan, Mohanty, K. M., Xu, Guangyong, Gu, Genda D., and Tranquada, John M. Growth and structural characterization of large superconducting crystals of La2-xCa1+xCu2O6.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevMaterials.1.074801.

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                    Schneeloch, J. A., Guguchia, Z., Stone, Matthew B., Tian, Wei, Zhong, Ruidan, Mohanty, K. M., Xu, Guangyong, Gu, Genda D., & Tranquada, John M. Growth and structural characterization of large superconducting crystals of La2-xCa1+xCu2O6.  United States.  https://doi.org/10.1103/PhysRevMaterials.1.074801

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                    Schneeloch, J. A., Guguchia, Z., Stone, Matthew B., Tian, Wei, Zhong, Ruidan, Mohanty, K. M., Xu, Guangyong, Gu, Genda D., and Tranquada, John M. Fri .  
"Growth and structural characterization of large superconducting crystals of La2-xCa1+xCu2O6".  United States.  https://doi.org/10.1103/PhysRevMaterials.1.074801.  https://www.osti.gov/servlets/purl/1412763.

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@article{osti_1412763,

  title        = {Growth and structural characterization of large superconducting crystals of La2-xCa1+xCu2O6},

  author       = {Schneeloch, J. A. and Guguchia, Z. and Stone, Matthew B. and Tian, Wei and Zhong, Ruidan and Mohanty, K. M. and Xu, Guangyong and Gu, Genda D. and Tranquada, John M.},

  abstractNote = {Large crystals of La2-xCa1+xCu2O6 (La-Ca-2126) with x=0.10 and 0.15 have been grown and converted to bulk superconductors by high-pressure oxygen annealing. The superconducting transition temperature, Tc, is as high as 55 K; this can be raised to 60 K by postannealing in air. Here we present structural and magnetic characterizations of these crystals using neutron scattering and muon spin rotation techniques. While the as-grown, nonsuperconducting crystals are single phase, we find that the superconducting crystals contain three phases forming coherent domains stacked along the c axis: the dominant La-Ca-2126 phase, very thin (1.5 unit-cell) intergrowths of La2CuO4, and an antiferromagnetic La8Cu8O20 phase. We propose that the formation and segregation of the latter phases increases the Ca concentration of the La-Ca-2126, thus providing the hole doping that supports superconductivity.},

  doi          = {10.1103/PhysRevMaterials.1.074801},

  journal      = {Physical Review Materials},

  number       = 7,

  volume       = 1,

  place        = {United States},

  year         = {2017},

  month        = {12}

}

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Title: Growth and structural characterization of large superconducting crystals of La 2 - x Ca 1 + x Cu 2 O 6

Abstract

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Musrfit: A Free Platform-Independent Framework for μSR Data Analysis journal, January 2012

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Superconductivity at 60 K in La2-xSrxCaCu2O6: the simplest double-layer cuprate
journal, June 1990

Single-crystal growth and superconductivity of (La1−xSrx)2CaCu2O6+δ
journal, January 2006

Defect structure and superconducting properties of ${La}_{1.8}$ ${Sr}_{x}$ ${Ca}_{1.2 - x}$ ${Cu}_{2}$ $O_{6 - δ}$
journal, November 1993

Neutron scattering study on ${La}_{1.9} {Ca}_{1.1} {Cu}_{2} O_{6 + δ}$ and ${La}_{1.85} {Sr}_{0.15} Ca {Cu}_{2} O_{6 + δ}$
journal, March 2005

Musrfit: A Free Platform-Independent Framework for μSR Data Analysis
journal, January 2012

Magnetic phase diagram of lightly doped ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$ from ${}^{139}{La}$ nuclear quadrupole resonance
journal, October 1993

Incommensurate Spin Fluctuations in High-Transition Temperature Superconductors
journal, August 1997

Structural and magnetic instabilities of ${La}_{2 - x} {Sr}_{x} {CaCu}_{2} O_{6}$
journal, May 2002

La2SrCu2O6: Neutron diffraction study
journal, February 1990

Structure refinements of superconducting and nonsuperconducting ${La}_{1.82}$ ${Ca}_{1.18}$ ${Cu}_{2}$ $O_{6 \pm δ}$ from neutron-diffraction data
journal, March 1992

Superconducting phase of ${La}_{2} Cu O_{4 + δ}$ : A superconducting composition resulting from phase separation
journal, December 1988

The crystal structure of the La1.6Sr0.4CaCu2O6±δ superconductor
journal, December 1990

Infrared properties of ${La}_{2 - x} (C a, S r)_{x} {CaCu}_{2} O_{6 + δ}$ single crystals
journal, April 2003

Suppression of superconducting transition temperature in orthorhombic La2-xCaxCuO4
journal, November 1993

Structure refinement of La1.9Ca1.1Cu2O6 with neutron powder diffraction data
journal, January 1989

Combined X-ray and neutron powder diffraction study of the structure of La1.8Sr0.2CaCu2O6
journal, March 1991

Stability of superconducting La _1.8 Sr _0.2 CaCu ₂ O ₆ with respect to oxygen partial pressure
journal, June 1993

Single crystal growth and superconductivity in La1.87Ca1.13Cu2O6
journal, August 1991

High-pressure synthesis of superconducting
journal, November 1990