Title: Neutron scattering study of spin ordering and stripe pinning in superconducting La1.93 Sr0.07 CuO4

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [2];  [2];  [3];  [1];  [1];  [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

The relationships among charge order, spin fluctuations, and superconductivity in underdoped cuprates remain controversial. We use neutron scattering techniques to study these phenomena in La1.93 Sr0.07 CuO4 a superconductor with a transition temperature of Tc = 20 K. At T<< Tc, we find incommensurate spin fluctuations with a quasielastic energy spectrum and no sign of a gap within the energy range from 0.2 to 15 meV. A weak elastic magnetic component grows below ~ 10 K, consistent with results from local probes. Regarding the atomic lattice, we have discovered unexpectedly strong fluctuations of the CuO6 octahedra about Cu-O bonds, which are associated with inequivalent O sites within the CuO2 planes. Moreover, we observed a weak elastic (3 ⁻30) superlattice peak that implies a reduced lattice symmetry. The presence of inequivalent O sites rationalizes various pieces of evidence for charge stripe order in underdoped La2-xSrxCuO4. The coexistence of superconductivity with quasi-static spin-stripe order suggests the presence of intertwined orders; however, the rotation of the stripe orientation away from the Cu-O bonds might be connected with evidence for a finite gap at the nodal points of the superconducting gap function.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Spallation Neutron Source
Sponsoring Organization:
USDOE Office of Science (SC); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1240590
Report Number(s):
BNL-111750-2016-JA; KC0201060
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 17 Vol. 92; ISSN 1098-0121; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Reconciliation of local and long-range tilt correlations in underdoped La 2 − x Ba x CuO 4 ( 0 ≤ x ≤ 0.155 ) journal February 2015
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Two-Dimensional Orbital-Like Magnetic Order in the High-Temperature La 2 − x Sr x CuO 4 Superconductor journal July 2010
Evolution from a Nodeless Gap to d x 2 − y 2 -Wave in Underdoped La 2 − x Sr x CuO 4 journal January 2013
Competing States in the t - J Model: Uniform d -Wave State versus Stripe State journal July 2014
Neutron-Scattering Evidence for a Periodically Modulated Superconducting Phase in the Underdoped Cuprate La 1.905 Ba 0.095 CuO 4 journal October 2014
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Structural phase transformations and superconductivity in La 2 − x Ba x CuO 4 journal June 1989
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Lattice instabilities, isotope effect, and high- T c superconductivity in La 2 − x Ba x CuO 4 journal July 1991
Interplay between lattice softening and high- T c superconductivity in La 1.86 Sr 0.14 CuO 4 journal May 1993
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Stripe States with Spatially Oscillating d -Wave Superconductivity in the Two-Dimensional t − t ′ − J Model journal February 2002
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Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La 1.875 Ba 0.125 CuO 4 journal August 2007
Dynamical Layer Decoupling in a Stripe-Ordered High- T c Superconductor journal September 2007
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Pairing symmetry in cuprate superconductors journal October 2000
A common thread: The pairing interaction for unconventional superconductors journal October 2012
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Structural and superconducting properties of La 2 − x Sr x CuO 4 as a function of Sr content journal February 1994
Structural effects of hydrostatic pressure in orthorhombic La 2 − x Sr x CuO 4 journal August 1994
Low-temperature structural transitions and T c suppression in La 2 − x M x CuO 4 ( M =Ba, Sr) journal April 1995
Landau theory of stripe phases in cuprates and nickelates journal January 1998
High-resolution x-ray diffraction study of La 1.88 − y Sr 0.12 Nd y CuO 4 journal October 1998
Neutron-scattering study of static antiferromagnetic correlations in La 2 − x Sr x Cu 1 − y Zn y O 4 journal March 1999
Neutron-scattering study of spin-density wave order in the superconducting state of excess-oxygen-doped La 2 CuO 4 + y journal August 1999
Observation of incommensurate magnetic correlations at the lower critical concentration for superconductivity in La 2 − x Sr x CuO 4 ( x = 0.05 ) journal July 1999
Direct observation of dynamic local structure in La 2 − x Sr x CuO 4 around x = 0.12 journal May 2000
Incommensurate geometry of the elastic magnetic peaks in superconducting La 1.88 Sr 0.12 CuO 4 journal June 2000
Impurity-induced quasiparticle transport and universal-limit Wiedemann-Franz violation in d -wave superconductors journal July 2000
Systematic study of short-range antiferromagnetic order and the spin-glass state in lightly doped La 2 − x Sr x CuO 4 journal August 2000
Onset of the vortexlike Nernst signal above T c in La 2 − x Sr x CuO 4 and Bi 2 Sr 2 − y La y CuO 6 journal November 2001
Static magnetic correlations near the insulating-superconducting phase boundary in La2-xSrxCuO4 journal January 2002
Thermal conductivity across the phase diagram of cuprates: Low-energy quasiparticles and doping dependence of the superconducting gap journal May 2003
Heat transport of La 2 − y Eu y CuO 4 and La 1.88 − y Eu y Sr 0.12 CuO 4 single crystals journal May 2003
Stripe order, depinning, and fluctuations in La 1.875 Ba 0.125 CuO 4 and La 1.875 Ba 0.075 Sr 0.050 CuO 4 journal September 2004
Distinguishing patterns of charge order: Stripes or checkerboards journal October 2006
Fincher-Burke spin excitations and ω ∕ T scaling in insulating La 1.95 Sr 0.05 CuO 4 journal November 2007
Spectral signatures of modulated d -wave superconducting phases journal May 2008
Evidence for unusual superconducting correlations coexisting with stripe order in La 1.875 Ba 0.125 CuO 4 journal November 2008
Spin susceptibility of underdoped cuprate superconductors: Insights from a stripe-ordered crystal journal December 2008
Theory of the striped superconductor journal February 2009
Diamagnetism and Cooper pairing above T c in cuprates journal February 2010
Breakdown of the universal Josephson relation in spin-ordered cuprate superconductors journal September 2010
Role of nematic fluctuations in the thermal melting of pair-density-wave phases in two-dimensional superconductors journal March 2011
Stripe order in superconducting La 2 − x Ba x CuO 4 ( 0 . 095 ⩽ x ⩽ 0 . 155 ) journal March 2011
Probing the connections between superconductivity, stripe order, and structure in La 1.905 Ba 0.095 Cu 1 − y Zn y O 4 journal April 2012
Uniaxial linear resistivity of superconducting La 1.905 Ba 0.095 CuO 4 induced by an external magnetic field journal April 2012
139 La NMR investigation in underdoped La 1.93 Sr 0.07 CuO 4 journal May 2012
Evidence of a critical hole concentration in underdoped YBa 2 Cu 3 O y single crystals revealed by 63 Cu NMR journal December 2012
Charge density wave fluctuations in La 2 − x Sr x CuO 4 and their competition with superconductivity journal June 2014
Rotated stripe order and its competition with superconductivity in La 1.88 Sr 0.12 CuO 4 journal September 2014
Reconciliation of local and long-range tilt correlations in underdoped La 2 − x Ba x CuO 4 ( 0 ≤ x ≤ 0.155 ) journal February 2015
Quasi-two-dimensional spin and phonon excitations in La 1.965 Ba 0.035 CuO 4 journal June 2015
Towards a Two-Dimensional Superconducting State of La 2 − x Sr x CuO 4 in a Moderate External Magnetic Field journal April 2010
Two-Dimensional Orbital-Like Magnetic Order in the High-Temperature La 2 − x Sr x CuO 4 Superconductor journal July 2010
Evolution from a Nodeless Gap to d x 2 − y 2 -Wave in Underdoped La 2 − x Sr x CuO 4 journal January 2013
Observation of Magnetic Ordering in Superconducting La 2 − x Sr x Cu O 4 by Muon Spin Rotation journal January 1989
Structural phase transformations and superconductivity in La 2 − x Ba x CuO 4 journal June 1989
Incommensurate magnetic fluctuations in La 2 − x Sr x CuO 4 journal September 1991
Lattice instabilities, isotope effect, and high- T c superconductivity in La 2 − x Ba x CuO 4 journal July 1991
Interplay between lattice softening and high- T c superconductivity in La 1.86 Sr 0.14 CuO 4 journal May 1993
Spin-Glass Behavior in L a 1.96 S r 0.04 Cu O 4 journal September 1995
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
C 63 u NQR Measurement of Stripe Order Parameter in La 2 − x Sr x CuO 4 journal May 1999
Charge Segregation, Cluster Spin Glass, and Superconductivity in La 1.94 Sr 0.06 CuO 4 journal July 1999
Unusual Magnetic Susceptibility Anisotropy in Untwinned La 2 − x Sr x CuO 4 Single Crystals in the Lightly Doped Region journal June 2001
Stripe States with Spatially Oscillating d -Wave Superconductivity in the Two-Dimensional t − t ′ − J Model journal February 2002
Magnetic-Field-Induced Localization of Quasiparticles in Underdoped L a 2 − x S r x C u O 4 Single Crystals journal March 2003
Field-Induced Thermal Metal-to-Insulator Transition in Underdoped L a 2 − x S r x C u O 4 + δ journal May 2003
Dimensional Crossover and Charge Order in Half-Doped Manganites and Cobaltites journal July 2003
Josephson Plasmon and Inhomogeneous Superconducting State in L a 2 − x S r x C u O 4 journal October 2003
Dispersive Excitations in the High-Temperature Superconductor L a 2 − x S r x C u O 4 journal September 2004
Theory of Incommensurate Magnetic Correlations Across the Insulator-Superconductor Transition of Underdoped La 2 − x Sr x CuO 4 journal March 2005
Magic Doping Fractions for High-Temperature Superconductors journal May 2005
Magnetic-Field-Induced Spin Excitations and Renormalized Spin Gap of the Underdoped La 1.895 Sr 0.105 CuO 4 Superconductor journal February 2007
Two-Dimensional Superconducting Fluctuations in Stripe-Ordered La 1.875 Ba 0.125 CuO 4 journal August 2007
Dynamical Layer Decoupling in a Stripe-Ordered High- T c Superconductor journal September 2007
Spin- and Pair-Density-Wave Glasses journal July 2015
Magnetic, transport, and optical properties of monolayer copper oxides journal July 1998
Pairing symmetry in cuprate superconductors journal October 2000
A common thread: The pairing interaction for unconventional superconductors journal October 2012
Colloquium : Theory of intertwined orders in high temperature superconductors journal May 2015
Quantum Impurities in the Two-Dimensional Spin One-Half Heisenberg Antiferromagnet journal March 2002
The Ground State of the Pseudogap in Cuprate Superconductors journal November 2006
Thermal conductivity and competing orders in d-wave superconductors journal February 2003
Energy Spectrum of Spin Fluctuations in Superconducting La 2 - x Sr x CuO 4 ( 0.10 ≤ x ≤ 0.25 ) journal April 2000
Structural Instability Associated with the Tilting of CuO 6 Octahedra in La 2 - x Sr x CuO 4 journal March 2000
Spin Fluctuations in the Underdoped High- T c Cuprate La 1.93 Sr 0.07 CuO 4 journal March 2001
Quasiparticle Heat Transport in Mixed State of High- T c Superconductors journal August 2004
Neutron Scattering Study of Soft Phonons and Diffuse Scattering in Insulating La 1.95 Sr 0.05 CuO 4 journal December 2004
Energy Spectrum of Spin Fluctuations in Superconducting La 2 - x Sr x CuO 4 ( 0.10 ≤ x ≤ 0.25 ) journal April 2000
Quasiparticle Heat Transport in Mixed State of High- T c Superconductors journal August 2004
Neutron Scattering Study of Soft Phonons and Diffuse Scattering in Insulating La 1.95 Sr 0.05 CuO 4 journal December 2004
“Nodal Gap” Induced by the Incommensurate Diagonal Spin Density Modulation in Underdoped High- T c Superconductors journal January 2015
Unusual Magnetic Susceptibility Anisotropy in Untwinned La2–xSrxCuO4 Single Crystals in the Lightly Doped Region text January 2001
NMR study on the local structure in La-based high-Tc cuprates text January 2008
Theory of the striped superconductor text January 2008
Energy gaps in the failed high-Tc superconductor La1.875Ba0.125CuO4 text January 2008
Charge $4e$ superconductivity from pair density wave order in certain high temperature superconductors text January 2009
Competing states in the t-J model: uniform d-wave state versus stripe state text January 2014
The geometric order of stripes and Luttinger liquids text January 2001
Spin Fluctuations in the Underdoped High-Tc Cuprate La1.93Sr0.07CuO4 text January 2001
Dimensional cross-over and charge order in half-doped Manganites and Cobaltites text January 2001
Quantum Impurities in the Two-Dimensional Spin One-Half Heisenberg Antiferromagnet text January 2002
Thermal Conductivity across the Phase Diagram of Cuprates: Low-Energy Quasiparticles and Doping Dependence of the Superconducting Gap text January 2003
Heat transport of La$_{2-y}$Eu$_y$CuO$_4$ and La$_{1.88-y}$Eu$_y$Sr$_{0.12}$CuO$_4$ single crystals text January 2003
Quasiparticle heat transport in the mixed state of high $T_c$ superconductors text January 2003
Neutron scattering study of soft phonons and diffuse scattering in insulating La$_{1.95}$Sr$_{0.05}$CuO$_{4}$ text January 2004
The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors text January 2005
Distinguishing Patterns of Charge Order: Stripes or Checkerboards text January 2006
The Ground State of the Pseudogap in Cuprate Superconductors text January 2006
Direct Observation of a One Dimensional Static Spin Modulation in Insulating La1.95Sr0.05CuO4 text January 1999
Impurity-Induced Quasiparticle Transport and Universal Limit Wiedemann-Franz Violation in d-Wave Superconductors text January 1999

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