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:: Fri Dec 01 00:00:00 EST 2017

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

Copy to clipboard


                    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

Copy to clipboard


                    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.

Copy to clipboard


                    
@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         = {Fri Dec 01 00:00:00 EST 2017},

  month        = {Fri Dec 01 00:00:00 EST 2017}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1103/PhysRevMaterials.1.074801

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 2 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Works referenced in this record:

Superconductivity and antiferromagnetism in ${La}_{2 - x}$ ${Ca}_{1 + x}$ ${Cu}_{2}$ $O_{6 \pm δ}$ and ${La}_{2 - x}$ ${Sr}_{x}$ ${CaCu}_{2}$ $O_{6 \pm δ}$
journal, October 1992

Kinoshita, K.; Yamada, T.
Physical Review B, Vol. 46, Issue 14
DOI: 10.1103/PhysRevB.46.9116

Electrochemistry and staging in ${La}_{2} {CuO}_{4 + δ}$
journal, June 1998

Blakeslee, P.; Birgeneau, R. J.; Chou, F. C.
Physical Review B, Vol. 57, Issue 21
DOI: 10.1103/PhysRevB.57.13915

Electronic phase separation in lightly doped ${La}_{2 - x} {Sr}_{x} Cu O_{4}$
journal, March 2002

Matsuda, M.; Fujita, M.; Yamada, K.
Physical Review B, Vol. 65, Issue 13
DOI: 10.1103/PhysRevB.65.134515

Single-crystal growth and anisotropic electrical properties of (La1? xCa x )2CaCu2O6
journal, April 1994

Okuya, M.; Kimura, T.; Kobayashi, R.
Journal of Superconductivity, Vol. 7, Issue 2
DOI: 10.1007/BF00724560

Nanoscale coherent intergrowthlike defects in a crystal of ${La}_{1.9} {Ca}_{1.1} {Cu}_{2} O_{6 + δ}$ made superconducting by high-pressure oxygen annealing
journal, October 2014

Hu, Hefei; Zhu, Yimei; Shi, Xiaoya
Physical Review B, Vol. 90, Issue 13
DOI: 10.1103/PhysRevB.90.134518

Superconductivity in La2−xSrxCaCu2O6 at 60 K
journal, March 1991

Liu, H. B.; Morris, D. E.; Sinha, A. P. B.
Physica C: Superconductivity, Vol. 174, Issue 1-3
DOI: 10.1016/0921-4534(91)90417-W

Structure of the superconducting ${La}_{2}$ ${CuO}_{4 + δ}$ phases (δ≊0.08,0.12) prepared by electrochemical oxidation
journal, July 1993

Radaelli, P. G.; Jorgensen, J. D.; Schultz, A. J.
Physical Review B, Vol. 48, Issue 1
DOI: 10.1103/PhysRevB.48.499

Metallic, but Not Superconducting, La-Ba (and La-Sr) Copper Oxides
journal, February 1988

Torrance, J. B.; Tokura, Y.; Nazzal, A.
Physical Review Letters, Vol. 60, Issue 6
DOI: 10.1103/PhysRevLett.60.542

Possible highT c superconductivity in the Ba?La?Cu?O system
journal, June 1986

Bednorz, J. G.; M�ller, K. A.
Zeitschrift f�r Physik B Condensed Matter, Vol. 64, Issue 2
DOI: 10.1007/BF01303701

Crystal growth and superconductivity of (La1−xCax)2CaCu2O6+δ
journal, January 2006

Gu, G. D.; Hücker, M.; Kim, Y. -J.
Journal of Physics and Chemistry of Solids, Vol. 67, Issue 1-3
DOI: 10.1016/j.jpcs.2005.10.153

Staggered magnetization in ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$ from ${}^{139}{La}$ NQR and μSR: Effects of Sr doping in the range 0< x <0.02
journal, September 1995

Borsa, F.; Carreta, P.; Cho, J. H.
Physical Review B, Vol. 52, Issue 10
DOI: 10.1103/PhysRevB.52.7334

Intercroissance de feuillets “perovskites lacunaires” et de feuillets type chlorure de sodium: Les oxydes
journal, July 1980

Nguyen, N.; Er-Rakho, L.; Michel, C.
Materials Research Bulletin, Vol. 15, Issue 7
DOI: 10.1016/0025-5408(80)90212-3

A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source
journal, April 2014

Stone, M. B.; Niedziela, J. L.; Abernathy, D. L.
Review of Scientific Instruments, Vol. 85, Issue 4
DOI: 10.1063/1.4870050

Oxygen excess and superconductivity at 45 K in La2CaCu2O6+y
journal, September 1990

Fuertes, A.; Obradors, X.; Navarro, J. M.
Physica C: Superconductivity, Vol. 170, Issue 1-2
DOI: 10.1016/0921-4534(90)90241-6

La8−xSrxCu8O20: An oxygen-deficient perovskite built of CuO6, CuO5, and CuO4 polyhedra
journal, April 1988

Er-Rakho, L.; Michel, C.; Raveau, B.
Journal of Solid State Chemistry, Vol. 73, Issue 2
DOI: 10.1016/0022-4596(88)90138-7

Common Phase Diagram for Antiferromagnetism in ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$ and $Y_{1 - x} {Ca}_{x} {Ba}_{2} {Cu}_{3} O_{6}$ as Seen by Muon Spin Rotation
journal, April 1998

Niedermayer, Ch.; Bernhard, C.; Blasius, T.
Physical Review Letters, Vol. 80, Issue 17
DOI: 10.1103/PhysRevLett.80.3843

Discovery of a new, metallic (but not superconducting) compound in the lanthanum-strontium-copper-oxygen system: La5SrCu6O15
journal, November 1987

Tokura, Y.; Torrance, J. B.; Nazzal, A. I.
Journal of the American Chemical Society, Vol. 109, Issue 24
DOI: 10.1021/ja00258a064

Solubility of Ca in superconducting La2−xCaxCuO4
journal, July 1992

Moodenbaugh, A. R.; Sabatini, R. L.; Xu, Youwen
Physica C: Superconductivity, Vol. 198, Issue 1-2
DOI: 10.1016/0921-4534(92)90272-E

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

Cava, R. J.; Batlogg, B.; van Dover, R. B.
Nature, Vol. 345, Issue 6276
DOI: 10.1038/345602a0

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

Gu, G. D.; Hucker, M.; Kim, Y. -J.
Journal of Crystal Growth, Vol. 287, Issue 2
DOI: 10.1016/j.jcrysgro.2005.11.026

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

Shaked, H.; Jorgensen, J. D.; Hunter, B. A.
Physical Review B, Vol. 48, Issue 17
DOI: 10.1103/PhysRevB.48.12941

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

Hücker, M.; Kim, Young-June; Gu, G. D.
Physical Review B, Vol. 71, Issue 9
DOI: 10.1103/PhysRevB.71.094510

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

Suter, A.; Wojek, B. M.
Physics Procedia, Vol. 30
DOI: 10.1016/j.phpro.2012.04.042

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

Chou, F. C.; Borsa, F.; Cho, J. H.
Physical Review Letters, Vol. 71, Issue 14
DOI: 10.1103/PhysRevLett.71.2323

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

Wells, B. O.; Lee, Y. S.; Kastner, M. A.
Science, Vol. 277, Issue 5329
DOI: 10.1126/science.277.5329.1067

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

Ulrich, C.; Kondo, S.; Reehuis, M.
Physical Review B, Vol. 65, Issue 22
DOI: 10.1103/PhysRevB.65.220507

La2SrCu2O6: Neutron diffraction study
journal, February 1990

Caignaert, V.; Nguyen, N.; Raveau, B.
Materials Research Bulletin, Vol. 25, Issue 2
DOI: 10.1016/0025-5408(90)90046-5

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

Kinoshita, K.; Izumi, F.; Yamada, T.
Physical Review B, Vol. 45, Issue 10
DOI: 10.1103/PhysRevB.45.5558

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

Jorgensen, J. D.; Dabrowski, B.; Pei, Shiyou
Physical Review B, Vol. 38, Issue 16
DOI: 10.1103/PhysRevB.38.11337

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

Cava, R. J.; Santoro, A.; Krajewski, J. J.
Physica C: Superconductivity, Vol. 172, Issue 1-2
DOI: 10.1016/0921-4534(90)90652-U

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

Wang, N. L.; Zheng, P.; Feng, T.
Physical Review B, Vol. 67, Issue 13
DOI: 10.1103/PhysRevB.67.134526

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

Dabrowski, B.; Wang, Z.; Jorgensen, J. D.
Physica C: Superconductivity, Vol. 217, Issue 3-4
DOI: 10.1016/0921-4534(93)90349-U

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

Izumi, F.; Takayama-Muromachi, E.; Nakai, Y.
Physica C: Superconductivity, Vol. 157, Issue 1
DOI: 10.1016/0921-4534(89)90472-3

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

Sakurai, Takeshi; Yamashita, Toru; Willis, J. O.
Physica C: Superconductivity, Vol. 174, Issue 1-3
DOI: 10.1016/0921-4534(91)90435-2

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

Sakurai, Takeshi; Yamashita, Toru; Yamauchi, H.
Journal of Applied Physics, Vol. 73, Issue 11
DOI: 10.1063/1.354094

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

Ishii, Takao; Watanabe, Takao; Kinoshita, Kyoichi
Physica C: Superconductivity, Vol. 179, Issue 1-3
DOI: 10.1016/0921-4534(91)90008-M

High-pressure synthesis of superconducting
journal, November 1990

Kinoshita, Kyoichi; Shibata, Hiroyuki; Yamada, Tomoaki
Physica C: Superconductivity, Vol. 171, Issue 5-6
DOI: 10.1016/0921-4534(90)90267-I

Similar Records in DOE PAGES and OSTI.GOV collections:

Nanoscale coherent intergrowthlike defects in a crystal of ${La}_{1.9} {Ca}_{1.1} {Cu}_{2} O_{6 + δ}$ made superconducting by high-pressure oxygen annealing

Journal Article Hu, Hefei ; Zhu, Yimei ; Shi, Xiaoya ; ... - Physical Review. B, Condensed Matter and Materials Physics

Superconductivity with T_c = 53.5 K has been induced in a large La₁.₉Ca₁.₁Cu₂O₆ (La-2126) single crystal by annealing in a high partial-pressure of oxygen at 1200°C. Using transmission electron microscopy (TEM) techniques, we show that a secondary Ca-doped La₂CuO₄ (La-214) phase, not present in the as-grown crystal, appears as a coherent “intergrowth” as a consequence of the annealing. A corresponding secondary superconducting transition near 13 K is evident in the magnetization measurement. In this study, electron energy loss spectroscopy (EELS) reveals a pre-edge peak at the O K edge in the superconducting La-2126 phase, which is absent in the as-grownmore »« less
Cited by 3
https://doi.org/10.1103/PhysRevB.90.134518

Full Text Available
Gapless spin excitations in superconducting ${La}_{2 - x} {Ca}_{1 + x} {Cu}_{2} O_{6}$ with $T_{c}$ up to 55 K

Journal Article Schneeloch, John A. ; Zhong, Ruidan ; Stone, M. B. ; ... - Physical Review B

We report here inelastic neutron scattering on single crystals of the bilayer cuprate familymore »« less
Cited by 2
https://doi.org/10.1103/PhysRevB.99.174515

Full Text Available
Appearance of superconductivity at the vacancy order-disorder boundary in $K_{x} {Fe}_{2 - y} {Se}_{2}$

Journal Article Duan, Chunruo ; Yang, Junjie ; Ren, Yang ; ... - Physical Review B

The role of phase separation and the effect of Fe-vacancy ordering in the emergence of superconductivity in alkali metal doped iron selenides A(x)Fe(2-y)Se(2) (A = K, Rb, Cs) is explored. High energy x-ray diffraction and Monte Carlo simulation were used to investigate the crystal structure of quenched superconducting (SC) and as-grown nonsuperconducting (NSC) KxFe2-ySe2 single crystals. The coexistence of superlattice structures with the in-plane root 2 x root 2 K-vacancy ordering and the root 5 x root 5 Fe-vacancy ordering were observed in both the SC and NSC crystals alongside the I4/mmm Fe-vacancy-free phase. Moreover, in the SC crystals, anmore »« less
Cited by 2
https://doi.org/10.1103/PhysRevB.97.184502

Full Text Available
Local structural disorder and superconductivity in K $_{x}$ Fe $_{2 - y}$ Se $_{2}$

Journal Article Ryu, Hyejin ; Lei, Hechang ; Frenkel, A. I. ; ... - Physical Review. B, Condensed Matter and Materials Physics

We report significantly enhanced magnetic moment in K 0.69 ( 2 ) Fe 1.45 ( 1 ) Se 2.00 ( 1 ) single crystals with sharp T c and bulk superconductivity obtained by postannealing and quenching process. There are two Fe sites in the K 0.69 ( 2 ) Fe 1.45 ( 1 ) Se 2.00 ( 1 ) unit cell: Fe1, which has higher symmetry with longer average Fe-Se bond length, and Fe2, which has lower symmetry with shorter average Fe-Se bond length. Temperature-dependent x-ray absorption fine-structure (XAFS) analysis results on quenched and as-grown K 0.69 ( 2 )more »« less
https://doi.org/10.1103/PhysRevB.85.224515
Pressure-Induced Superconductivity In Polycrystalline ${La}_{3} {Ni}_{2} O_{7 - δ}$

Journal Article Wang, G. ; Wang, N. N. ; Shen, X. L. ; ... - Physical Review. X

We synthesized polycrystalline La₃Ni₂O_7-δ (δ ≈ 0.07) samples by using the sol-gel method without postannealing under high oxygen pressure, and then measured temperature-dependent resistivity under various hydrostatic pressures up to 18 GPa by using the cubic anvil and two-stage multianvil apparatus. We find that the density-wave-like anomaly in resistivity is progressively suppressed with increasing pressure and the resistivity drop corresponding to the onset of superconductivity emerges at pressure as low as ~ 6 GPa. Zero resistivity is achieved at 9 GPa belowmore »« less
https://doi.org/10.1103/PhysRevX.14.011040

Similar Records

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

Abstract

Citation Formats

Superconductivity and antiferromagnetism in La 2 − x Ca 1 + x Cu 2 O 6 ± δ and La 2 − x Sr x CaCu 2 O 6 ± δ journal, October 1992

Electrochemistry and staging in La 2 CuO 4 + δ journal, June 1998

Electronic phase separation in lightly doped La 2 − x Sr x Cu O 4 journal, March 2002

Single-crystal growth and anisotropic electrical properties of (La1? xCa x )2CaCu2O6 journal, April 1994

Nanoscale coherent intergrowthlike defects in a crystal of La 1.9 Ca 1.1 Cu 2 O 6 + δ made superconducting by high-pressure oxygen annealing journal, October 2014

Superconductivity in La2−xSrxCaCu2O6 at 60 K journal, March 1991

Structure of the superconducting La 2 CuO 4 + δ phases (δ≊0.08,0.12) prepared by electrochemical oxidation journal, July 1993

Metallic, but Not Superconducting, La-Ba (and La-Sr) Copper Oxides journal, February 1988

Possible highT c superconductivity in the Ba?La?Cu?O system journal, June 1986

Crystal growth and superconductivity of (La1−xCax)2CaCu2O6+δ journal, January 2006

Staggered magnetization in La 2 − x Sr x CuO 4 from La 139 NQR and μSR: Effects of Sr doping in the range 0< x <0.02 journal, September 1995

Intercroissance de feuillets “perovskites lacunaires” et de feuillets type chlorure de sodium: Les oxydes journal, July 1980

A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source journal, April 2014

Oxygen excess and superconductivity at 45 K in La2CaCu2O6+y journal, September 1990

La8−xSrxCu8O20: An oxygen-deficient perovskite built of CuO6, CuO5, and CuO4 polyhedra journal, April 1988

Common Phase Diagram for Antiferromagnetism in La 2 − x Sr x CuO 4 and Y 1 − x Ca x Ba 2 Cu 3 O 6 as Seen by Muon Spin Rotation journal, April 1998

Discovery of a new, metallic (but not superconducting) compound in the lanthanum-strontium-copper-oxygen system: La5SrCu6O15 journal, November 1987

Solubility of Ca in superconducting La2−xCaxCuO4 journal, July 1992

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 La 139 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 ± 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

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

Superconductivity and antiferromagnetism in ${La}_{2 - x}$ ${Ca}_{1 + x}$ ${Cu}_{2}$ $O_{6 \pm δ}$ and ${La}_{2 - x}$ ${Sr}_{x}$ ${CaCu}_{2}$ $O_{6 \pm δ}$
journal, October 1992

Electrochemistry and staging in ${La}_{2} {CuO}_{4 + δ}$
journal, June 1998

Electronic phase separation in lightly doped ${La}_{2 - x} {Sr}_{x} Cu O_{4}$
journal, March 2002

Single-crystal growth and anisotropic electrical properties of (La1? xCa x )2CaCu2O6
journal, April 1994

Nanoscale coherent intergrowthlike defects in a crystal of ${La}_{1.9} {Ca}_{1.1} {Cu}_{2} O_{6 + δ}$ made superconducting by high-pressure oxygen annealing
journal, October 2014

Superconductivity in La2−xSrxCaCu2O6 at 60 K
journal, March 1991

Structure of the superconducting ${La}_{2}$ ${CuO}_{4 + δ}$ phases (δ≊0.08,0.12) prepared by electrochemical oxidation
journal, July 1993

Metallic, but Not Superconducting, La-Ba (and La-Sr) Copper Oxides
journal, February 1988

Possible highT c superconductivity in the Ba?La?Cu?O system
journal, June 1986

Crystal growth and superconductivity of (La1−xCax)2CaCu2O6+δ
journal, January 2006

Staggered magnetization in ${La}_{2 - x}$ ${Sr}_{x}$ ${CuO}_{4}$ from ${}^{139}{La}$ NQR and μSR: Effects of Sr doping in the range 0< x <0.02
journal, September 1995

Intercroissance de feuillets “perovskites lacunaires” et de feuillets type chlorure de sodium: Les oxydes
journal, July 1980

A comparison of four direct geometry time-of-flight spectrometers at the Spallation Neutron Source
journal, April 2014

Oxygen excess and superconductivity at 45 K in La2CaCu2O6+y
journal, September 1990

La8−xSrxCu8O20: An oxygen-deficient perovskite built of CuO6, CuO5, and CuO4 polyhedra
journal, April 1988

Common Phase Diagram for Antiferromagnetism in ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$ and $Y_{1 - x} {Ca}_{x} {Ba}_{2} {Cu}_{3} O_{6}$ as Seen by Muon Spin Rotation
journal, April 1998

Discovery of a new, metallic (but not superconducting) compound in the lanthanum-strontium-copper-oxygen system: La5SrCu6O15
journal, November 1987

Solubility of Ca in superconducting La2−xCaxCuO4
journal, July 1992

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