Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4

Wagman, J. J.; Carlo, Jeremy P.; Gaudet, J.; Van Gastel, G. J.; Abernathy, Douglas L.; Stone, Matthew B.; Granroth, Garrett E.; Kolesnikov, Alexander I.; Savici, Andrei T.; Kim, Young -June; Zhang, H.; Ellis, D.; Zhao, Yang; Clark, L.; Kallin, A. B.; Mazurek, E.; Dabkowska, H. A.; Gaulin, Bruce D.

doi:10.1103/PhysRevB.93.094416

Title: Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La_2-x(Sr;Ba)_xCuO₄

Abstract

We present time-of-flight neutron-scattering measurements on single crystals of La_2-xBa_xCuO₄ (LBCO) with 0 ≤ x ≤ 0.095 and La_2-xSr_xCuO₄ (LSCO) with x = 0.08 and 0.11. This range of dopings spans much of the phase diagram relevant to high temperature cuprate superconductivity, ranging from insulating, three dimensional commensurate long range antiferromagnetic order for x ≤ 0.02 to two dimensional (2D) incommensurate antiferromagnetism co-existing with superconductivity for x ≥ 0.05. Previous work on lightly doped LBCO with x = 0.035 showed a clear resonant enhancement of the inelastic scattering coincident with the low energy crossings of the highly dispersive spin excitations and quasi-2D optic phonons. The present work extends these measurements across the phase diagram and shows this enhancement to be a common feature to this family of layered quantum magnets. Furthermore we show that the low temperature, low energy magnetic spectral weight is substantially larger for samples with non-superconducting ground states relative to any of the samples with superconducting ground states. Lastly spin gaps, suppression of low energy magnetic spectral weight, are observed in both superconducting LBCO and LSCO samples, consistent with previous observations for superconducting LSCO

Authors:

Wagman, J. J. ^[1]; Carlo, Jeremy P. ^[2]; Gaudet, J. ^[1]; Van Gastel, G. J. ^[1]; Abernathy, Douglas L. ^[3]; Stone, Matthew B. ^[3]; Granroth, Garrett E. ^[3]; Kolesnikov, Alexander I. ^[3]; Savici, Andrei T. ^[3]; Kim, Young -June ^[4]; Zhang, H. ^[4]; Ellis, D. ^[4]; Zhao, Yang ^[5]; Clark, L. ^[1]; Kallin, A. B. ^[1]; Mazurek, E. ^[1]; Dabkowska, H. A. ^[1]; Gaulin, Bruce D. ^[6]

McMaster Univ., Hamilton, ON (Canada)
McMaster Univ., Hamilton, ON (Canada); Villanova Univ., Villanova, PA (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Toronto, Toronto, ON (Canada)
National Institute of Standards and Technology, Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
McMaster Univ., Hamilton, ON (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)

Publication Date:: Mon Mar 14 00:00:00 EDT 2016

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

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

OSTI Identifier:: 1244192

Alternate Identifier(s):: OSTI ID: 1242615

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 93; Journal Issue: 9; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Wagman, J. J., Carlo, Jeremy P., Gaudet, J., Van Gastel, G. J., Abernathy, Douglas L., Stone, Matthew B., Granroth, Garrett E., Kolesnikov, Alexander I., Savici, Andrei T., Kim, Young -June, Zhang, H., Ellis, D., Zhao, Yang, Clark, L., Kallin, A. B., Mazurek, E., Dabkowska, H. A., and Gaulin, Bruce D. Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevB.93.094416.

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                    Wagman, J. J., Carlo, Jeremy P., Gaudet, J., Van Gastel, G. J., Abernathy, Douglas L., Stone, Matthew B., Granroth, Garrett E., Kolesnikov, Alexander I., Savici, Andrei T., Kim, Young -June, Zhang, H., Ellis, D., Zhao, Yang, Clark, L., Kallin, A. B., Mazurek, E., Dabkowska, H. A., & Gaulin, Bruce D. Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4.  United States.  https://doi.org/10.1103/PhysRevB.93.094416

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                    Wagman, J. J., Carlo, Jeremy P., Gaudet, J., Van Gastel, G. J., Abernathy, Douglas L., Stone, Matthew B., Granroth, Garrett E., Kolesnikov, Alexander I., Savici, Andrei T., Kim, Young -June, Zhang, H., Ellis, D., Zhao, Yang, Clark, L., Kallin, A. B., Mazurek, E., Dabkowska, H. A., and Gaulin, Bruce D. Mon .  
"Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4".  United States.  https://doi.org/10.1103/PhysRevB.93.094416.  https://www.osti.gov/servlets/purl/1244192.

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@article{osti_1244192,

  title        = {Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4},

  author       = {Wagman, J. J. and Carlo, Jeremy P. and Gaudet, J. and Van Gastel, G. J. and Abernathy, Douglas L. and Stone, Matthew B. and Granroth, Garrett E. and Kolesnikov, Alexander I. and Savici, Andrei T. and Kim, Young -June and Zhang, H. and Ellis, D. and Zhao, Yang and Clark, L. and Kallin, A. B. and Mazurek, E. and Dabkowska, H. A. and Gaulin, Bruce D.},

  abstractNote = {We present time-of-flight neutron-scattering measurements on single crystals of La2-xBaxCuO4 (LBCO) with 0 ≤ x ≤ 0.095 and La2-xSrxCuO4 (LSCO) with x = 0.08 and 0.11. This range of dopings spans much of the phase diagram relevant to high temperature cuprate superconductivity, ranging from insulating, three dimensional commensurate long range antiferromagnetic order for x ≤ 0.02 to two dimensional (2D) incommensurate antiferromagnetism co-existing with superconductivity for x ≥ 0.05. Previous work on lightly doped LBCO with x = 0.035 showed a clear resonant enhancement of the inelastic scattering coincident with the low energy crossings of the highly dispersive spin excitations and quasi-2D optic phonons. The present work extends these measurements across the phase diagram and shows this enhancement to be a common feature to this family of layered quantum magnets. Furthermore we show that the low temperature, low energy magnetic spectral weight is substantially larger for samples with non-superconducting ground states relative to any of the samples with superconducting ground states. Lastly spin gaps, suppression of low energy magnetic spectral weight, are observed in both superconducting LBCO and LSCO samples, consistent with previous observations for superconducting LSCO},

  doi          = {10.1103/PhysRevB.93.094416},

  journal      = {Physical Review B},

  number       = 9,

  volume       = 93,

  place        = {United States},

  year         = {Mon Mar 14 00:00:00 EDT 2016},

  month        = {Mon Mar 14 00:00:00 EDT 2016}

}

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https://doi.org/10.1103/PhysRevB.93.094416

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We report a comprehensive Cu K-edge resonant inelastic x-ray scattering (RIXS) investigation of La{sub 2-x}Sr{sub x}CuO{sub 4} (LSCO) for 0 {le} x {le} 0.35, stripe-ordered La{sub 1.875}Ba{sub 0.125}CuO{sub 4} (LBCO), and La{sub 2}Cu{sub 0.96}Ni{sub 0.04}O{sub 4} (LCNO) crystals. The RIXS spectra measured at three high-symmetry momentum-transfer (q) positions are compared as a function of doping and for the different dopants. The spectra in the energy range 1-6 eV can be described with three broad peaks, which evolve systematically with increased doping. The most systematic trend was observed for q = ({pi},0) corresponding to the zone boundary. As hole doping increased,more »« less
Determination of the optical properties of La_2-xBa_xCuO₄ for several dopings, including the anomalous x=1/8 phase

Journal Article Homes, C. C. ; Hücker, M. ; Li, Q. ; ... - Physical Review. B, Condensed Matter and Materials Physics

The optical properties of single crystals of the high-temperature superconductor La_2-xBa_xCuO₄ have been measured over a wide frequency and temperature range for light polarized in the a-b planes and along the c axis. Three different Ba concentrations have been examined, x=0.095 with a critical temperature T_c=32 K, x=0.125 where the superconductivity is dramatically weakened with T_c≅2.4 K, and x=0.145 with T_c≅24 K. The in-plane behavior of the optical conductivity for these materials at high temperature is described by a Drude-like response with a scattering rate that decreases with temperature. Below T_c in the x=0.095 and 0.145 materials there is amore »« less
Cited by 39
https://doi.org/10.1103/PhysRevB.85.134510
Common Phase Diagram for Antiferromagnetism in La{sub 2{minus}{ital x}}Sr{sub {ital x} }CuO{sub 4} and Y{sub 1{minus}{ital x}}Ca{sub {ital x} }Ba{sub 2}Cu{sub 3} O{sub 6} as Seen by Muon Spin Rotation

Journal Article Niedermayer, C ; Blasius, T ; Bernhard, C ; ... - Physical Review Letters

By zero field muon spin rotation we studied the antiferromagnetic correlations in the single layer system La{sub 2{minus}x}Sr {sub x}CuO{sub 4} and the bilayer system Y{sub 1{minus}x}Ca {sub x}Ba{sub 2}Cu{sub 3}O{sub 6} . We observe a common phase diagram as a function of hole doping per plane with two distinct transitions in the magnetic ground state. The first transition marks the border between the 3D antiferromagnetic state and a disordered state with short ranged correlations. The second transition marks a distinct change in the magnetic correlations at the onset of superconductivity. {copyright} {ital 1998} {ital The American Physical Society}
https://doi.org/10.1103/PhysRevLett.80.3843

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Title: Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La2-x(Sr;Ba)xCuO4

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Citation Formats

Mantid—Data analysis and visualization package for neutron scattering and μ SR experiments journal, November 2014

SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS journal, November 2010

Mind the pseudogap journal, January 2001

Crystal structure and superconductivity of La2−xBaxCuO4 (0.03≤x≤0.24) journal, September 1993

Magnetically mediated superconductivity in heavy fermion compounds journal, July 1998

Effect of covalent bonding on magnetism and the missing neutron intensity in copper oxide compounds journal, October 2009

The Resonating Valence Bond State in La2CuO4 and Superconductivity journal, March 1987

Evidence for stripe correlations of spins and holes in copper oxide superconductors journal, June 1995

Antiferromagnetism in metals: from the cuprate superconductors to the heavy fermion materials journal, July 2012

Superconductivity, antiferromagnetism, and neutron scattering journal, January 2014

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

Spallation neutron source target station design, development, and commissioning journal, November 2014

Absolute cross-section normalization of magnetic neutron scattering data journal, August 2013

Spins, stripes, and superconductivity in hole-doped cuprates conference, January 2013

Spins in the Vortices of a High-Temperature Superconductor journal, March 2001

Design and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source journal, January 2012

Mind the pseudogap journal, November 2010

Scattering and Pairing in Cuprate Superconductors journal, August 2010

Importance of phase fluctuations in superconductors with small superfluid density journal, March 1995

Muon Spin Relaxation Studies of Magnetic-Field-Induced Effects in High- T c Superconductors journal, October 2005

Muon spin relaxation studies of incommensurate magnetism and superconductivity in stage-4 La 2 CuO 4.11 and La 1.88 Sr 0.12 CuO 4 journal, July 2002

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

Direct Relation between the Low-Energy Spin Excitations and Superconductivity of Overdoped High- T c Superconductors journal, May 2004

Two-dimensional incommensurate and three-dimensional commensurate magnetic order and fluctuations in La 2 − x Ba x CuO 4 journal, July 2013

Magnetic excitations in pure, lightly doped, and weakly metallic La 2 CuO 4 journal, December 1992

Diagonal and collinear incommensurate spin structures in underdoped La 2 − x Ba x CuO 4 journal, September 2008

Hole concentration dependence of the magnetic moment in superconducting and insulating La 2 − x Sr x CuO 4 journal, March 2001

Direct observation of a one-dimensional static spin modulation in insulating La 1.95 Sr 0.05 CuO 4 journal, February 2000

Magnetic Neutron Scattering in Hole-Doped Cuprate Superconductors journal, November 2006

Static magnetic correlations near the insulating-superconducting phase boundary in La2-xSrxCuO4 journal, January 2002

Doping dependence of the spatially modulated dynamical spin correlations and the superconducting-transition temperature in La 2 − x Sr x CuO 4 journal, March 1998

Quasi-two-dimensional spin and phonon excitations in La 1.965 Ba 0.035 CuO 4 journal, June 2015

Progress in Neutron Scattering Studies of Spin Excitations in High- T c Cuprates journal, January 2012

Spin Waves and Electronic Interactions in La 2 CuO 4 journal, June 2001

Anomalous High-Energy Spin Excitations in the High- T c Superconductor-Parent Antiferromagnet La 2 CuO 4 journal, December 2010

Incommensurate spin ordering and fluctuations in underdoped La 2 − x Ba x CuO 4 journal, June 2008

Electronic structure of doped lanthanum cuprates studied with resonant inelastic x-ray scattering journal, February 2011

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

Magnetic nature of the 500 meV peak in La 2 − x Sr x CuO 4 observed with resonant inelastic x-ray scattering at the Cu K -edge journal, February 2010

Lattice instability and soft phonons in single-crystal La 2 − x Sr x Cu O 4 journal, July 1988

Magnetic, transport, and optical properties of monolayer copper oxides journal, July 1998

Néel transition and sublattice magnetization of pure and doped La 2 CuO 4 journal, April 1992

High-resolution x-ray scattering studies of structural phase transitions in underdoped La 2 − x Ba x Cu O 4 journal, November 2007

Energy Spectrum of Spin Fluctuations in Superconducting La 2 - x Sr x CuO 4 ( 0.10 ≤ x ≤ 0.25 ) journal, April 2000

Doping a Mott insulator: Physics of high-temperature superconductivity journal, January 2006

Energy-dependent crossover from anisotropic to isotropic magnetic dispersion in lightly doped La 1.96 Sr 0.04 CuO 4 journal, February 2013

Magnetic Dispersion of the Diagonal Incommensurate Phase in Lightly Doped La 2 − x Sr x CuO 4 journal, November 2008

Spin-Stripe Density Varies Linearly With the Hole Content in Single-Layer Bi 2 + x Sr 2 − x CuO 6 + y Cuprate Superconductors journal, January 2013

Neutron-scattering study of antiferromagnetism in YBa 2 Cu 3 O 6.15 journal, November 1993

Magnetic-Field-Induced Spin Excitations and Renormalized Spin Gap of the Underdoped La 1.895 Sr 0.105 CuO 4 Superconductor journal, February 2007

Glassy low-energy spin fluctuations and anisotropy gap in La 1.88 Sr 0.12 CuO 4 journal, April 2013

Hidden Quantum Spin-Gap State in the Static Stripe Phase of High-Temperature La 2 − x Sr x CuO 4 Superconductors journal, January 2009

Persistence of High-Frequency Spin Fluctuations in Overdoped Superconducting La 2 − x Sr x CuO 4 ( x = 0.22 ) journal, August 2007

Magnetic nature of the 500 meV peak in $\rm La_{2-x}Sr_{x}CuO_4$ observed with resonant inelastic x-ray scattering at the Cu $K$-edge text, January 2010

Scattering and Pairing in Cuprate Superconductors text, January 2010

Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates text, January 2011

Antiferromagnetism in metals: from the cuprate superconductors to the heavy fermion materials text, January 2012

Static magnetic correlations near the insulating-superconducting phase boundary in La$_{2-x}$Sr$_{x}$CuO$_{4}$ text, January 2001

Direct relation between the low-energy spin excitations and superconductivity of overdoped high-$T_c$ superconductors text, January 2003

Direct Observation of a One Dimensional Static Spin Modulation in Insulating La1.95Sr0.05CuO4 text, January 1999

Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates journal, December 2018

Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates text, January 2018

Title: Neutron scattering studies of spin-phonon hybridization and superconducting spin gaps in the high temperature superconductor La_2-x(Sr;Ba)_xCuO₄

Mantid—Data analysis and visualization package for neutron scattering and $μ$ SR experiments
journal, November 2014

SEQUOIA: A Newly Operating Chopper Spectrometer at the SNS
journal, November 2010

Mind the pseudogap
journal, January 2001

Crystal structure and superconductivity of La2−xBaxCuO4 (0.03≤x≤0.24)
journal, September 1993

Magnetically mediated superconductivity in heavy fermion compounds
journal, July 1998

Effect of covalent bonding on magnetism and the missing neutron intensity in copper oxide compounds
journal, October 2009

The Resonating Valence Bond State in La2CuO4 and Superconductivity
journal, March 1987

Evidence for stripe correlations of spins and holes in copper oxide superconductors
journal, June 1995

Antiferromagnetism in metals: from the cuprate superconductors to the heavy fermion materials
journal, July 2012

Superconductivity, antiferromagnetism, and neutron scattering
journal, January 2014

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

Spallation neutron source target station design, development, and commissioning
journal, November 2014

Absolute cross-section normalization of magnetic neutron scattering data
journal, August 2013

Spins, stripes, and superconductivity in hole-doped cuprates
conference, January 2013

Spins in the Vortices of a High-Temperature Superconductor
journal, March 2001

Design and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source
journal, January 2012

Mind the pseudogap
journal, November 2010

Scattering and Pairing in Cuprate Superconductors
journal, August 2010

Importance of phase fluctuations in superconductors with small superfluid density
journal, March 1995

Muon Spin Relaxation Studies of Magnetic-Field-Induced Effects in High- $T_{c}$ Superconductors
journal, October 2005

Muon spin relaxation studies of incommensurate magnetism and superconductivity in stage-4 ${La}_{2} {CuO}_{4.11}$ and ${La}_{1.88} {Sr}_{0.12} {CuO}_{4}$
journal, July 2002

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

Direct Relation between the Low-Energy Spin Excitations and Superconductivity of Overdoped High- $T_{c}$ Superconductors
journal, May 2004

Two-dimensional incommensurate and three-dimensional commensurate magnetic order and fluctuations in La $_{2 - x}$ Ba $_{x}$ CuO $_{4}$
journal, July 2013

Magnetic excitations in pure, lightly doped, and weakly metallic ${La}_{2}$ ${CuO}_{4}$
journal, December 1992

Diagonal and collinear incommensurate spin structures in underdoped ${La}_{2 - x} {Ba}_{x} {CuO}_{4}$
journal, September 2008

Hole concentration dependence of the magnetic moment in superconducting and insulating ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, March 2001

Direct observation of a one-dimensional static spin modulation in insulating ${La}_{1.95} {Sr}_{0.05} {CuO}_{4}$
journal, February 2000

Magnetic Neutron Scattering in Hole-Doped Cuprate Superconductors
journal, November 2006

Static magnetic correlations near the insulating-superconducting phase boundary in La2-xSrxCuO4
journal, January 2002

Doping dependence of the spatially modulated dynamical spin correlations and the superconducting-transition temperature in ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, March 1998

Quasi-two-dimensional spin and phonon excitations in ${La}_{1.965} {Ba}_{0.035} {CuO}_{4}$
journal, June 2015

Progress in Neutron Scattering Studies of Spin Excitations in High- T _c Cuprates
journal, January 2012

Spin Waves and Electronic Interactions in ${La}_{2} {CuO}_{4}$
journal, June 2001

Anomalous High-Energy Spin Excitations in the High- $T_{c}$ Superconductor-Parent Antiferromagnet ${La}_{2} {CuO}_{4}$
journal, December 2010

Incommensurate spin ordering and fluctuations in underdoped ${La}_{2 - x} {Ba}_{x} {CuO}_{4}$
journal, June 2008

Electronic structure of doped lanthanum cuprates studied with resonant inelastic x-ray scattering
journal, February 2011

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

Magnetic nature of the 500 meV peak in ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$ observed with resonant inelastic x-ray scattering at the $Cu K$ -edge
journal, February 2010

Lattice instability and soft phonons in single-crystal ${La}_{2 - x} {Sr}_{x} Cu O_{4}$
journal, July 1988

Magnetic, transport, and optical properties of monolayer copper oxides
journal, July 1998

Néel transition and sublattice magnetization of pure and doped ${La}_{2}$ ${CuO}_{4}$
journal, April 1992

High-resolution x-ray scattering studies of structural phase transitions in underdoped ${La}_{2 - x} {Ba}_{x} Cu O_{4}$
journal, November 2007

Energy Spectrum of Spin Fluctuations in Superconducting La _{2 - x} Sr _x CuO ₄ ( 0.10 ≤ x ≤ 0.25 )
journal, April 2000

Doping a Mott insulator: Physics of high-temperature superconductivity
journal, January 2006

Energy-dependent crossover from anisotropic to isotropic magnetic dispersion in lightly doped La $_{1.96}$ Sr $_{0.04}$ CuO $_{4}$
journal, February 2013

Magnetic Dispersion of the Diagonal Incommensurate Phase in Lightly Doped ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$
journal, November 2008

Spin-Stripe Density Varies Linearly With the Hole Content in Single-Layer ${Bi}_{2 + x} {Sr}_{2 - x} {CuO}_{6 + y}$ Cuprate Superconductors
journal, January 2013

Neutron-scattering study of antiferromagnetism in ${YBa}_{2}$ ${Cu}_{3}$ $O_{6.15}$
journal, November 1993

Magnetic-Field-Induced Spin Excitations and Renormalized Spin Gap of the Underdoped ${La}_{1.895} {Sr}_{0.105} {CuO}_{4}$ Superconductor
journal, February 2007

Glassy low-energy spin fluctuations and anisotropy gap in La $_{1.88}$ Sr $_{0.12}$ CuO $_{4}$
journal, April 2013

Hidden Quantum Spin-Gap State in the Static Stripe Phase of High-Temperature ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$ Superconductors
journal, January 2009

Persistence of High-Frequency Spin Fluctuations in Overdoped Superconducting ${La}_{2 - x} {Sr}_{x} {CuO}_{4}$ ( $x = 0.22$ )
journal, August 2007

Magnetic nature of the 500 meV peak in $\rm La_{2-x}Sr_{x}CuO_4$ observed with resonant inelastic x-ray scattering at the Cu $K$-edge
text, January 2010

Scattering and Pairing in Cuprate Superconductors
text, January 2010

Progress in Neutron Scattering Studies of Spin Excitations in High-Tc Cuprates
text, January 2011

Antiferromagnetism in metals: from the cuprate superconductors to the heavy fermion materials
text, January 2012

Static magnetic correlations near the insulating-superconducting phase boundary in La$_{2-x}$Sr$_{x}$CuO$_{4}$
text, January 2001

Direct relation between the low-energy spin excitations and superconductivity of overdoped high-$T_c$ superconductors
text, January 2003

Direct Observation of a One Dimensional Static Spin Modulation in Insulating La1.95Sr0.05CuO4
text, January 1999

Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates
journal, December 2018

Low-energy antiferromagnetic spin fluctuations limit the coherent superconducting gap in cuprates
text, January 2018