Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound Sr14Cu24O41

Chen, Xi; Bansal, Dipanshu; Sullivan, Sean; Abernathy, Douglas L.; Aczel, Adam A.; Zhou, Jianshi; Delaire, Olivier A.; Shi, Li

doi:10.1103/PhysRevB.94.134309

Title: Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound $S r_{14} C u_{24} O_{41}$

Abstract

Intriguing lattice dynamics have been predicted for aperiodic crystals that contain incommensurate substructures. Here we report inelastic neutron scattering measurements of phonon and magnon dispersions in Sr₁₄Cu₂₄O₄₁, which contains incommensurate one-dimensional (1D) chain and two-dimensional (2D) ladder substructures. Two distinct pseudoacoustic phonon modes, corresponding to the sliding motion of one sublattice against the other, are observed for atomic motions polarized along the incommensurate axis. In the long wavelength limit, it is found that the sliding mode shows a remarkably small energy gap of 1.7–1.9 meV, indicating very weak interactions between the two incommensurate sublattices. The measurements also reveal a gapped and steep linear magnon dispersion of the ladder sublattice. The high group velocity of this magnon branch and weak coupling with acoustic and pseudoacoustic phonons can explain the large magnon thermal conductivity in Sr₁₄Cu₂₄O₄₁ crystals. In addition, the magnon specific heat is determined from the measured total specific heat and phonon density of states and exhibits a Schottky anomaly due to gapped magnon modes of the spin chains. Furthermore, these findings offer new insights into the phonon and magnon dynamics and thermal transport properties of incommensurate magnetic crystals that contain low-dimensional substructures.

Authors:

Chen, Xi ^[1]; Bansal, Dipanshu ^[2]; Sullivan, Sean ^[1]; Abernathy, Douglas L. ^[2]; Aczel, Adam A. ^[2]; Zhou, Jianshi ^[1]; Delaire, Olivier A. ^[3]; Shi, Li ^[1]

The Univ. of Texas at Austin, Austin, TX (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Duke Univ., Durham, NC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Publication Date:: Fri Oct 21 00:00:00 EDT 2016

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Office of Science (SC)

OSTI Identifier:: 1337851

Alternate Identifier(s):: OSTI ID: 1329503

Grant/Contract Number:: AC05-00OR22725; SC0016166

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 94; Journal Issue: 13; 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


                    Chen, Xi, Bansal, Dipanshu, Sullivan, Sean, Abernathy, Douglas L., Aczel, Adam A., Zhou, Jianshi, Delaire, Olivier A., and Shi, Li. Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound Sr14Cu24O41.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevB.94.134309.

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                    Chen, Xi, Bansal, Dipanshu, Sullivan, Sean, Abernathy, Douglas L., Aczel, Adam A., Zhou, Jianshi, Delaire, Olivier A., & Shi, Li. Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound Sr14Cu24O41.  United States.  https://doi.org/10.1103/PhysRevB.94.134309

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                    Chen, Xi, Bansal, Dipanshu, Sullivan, Sean, Abernathy, Douglas L., Aczel, Adam A., Zhou, Jianshi, Delaire, Olivier A., and Shi, Li. Fri .  
"Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound Sr14Cu24O41".  United States.  https://doi.org/10.1103/PhysRevB.94.134309.  https://www.osti.gov/servlets/purl/1337851.

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@article{osti_1337851,

  title        = {Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound Sr14Cu24O41},

  author       = {Chen, Xi and Bansal, Dipanshu and Sullivan, Sean and Abernathy, Douglas L. and Aczel, Adam A. and Zhou, Jianshi and Delaire, Olivier A. and Shi, Li},

  abstractNote = {Intriguing lattice dynamics have been predicted for aperiodic crystals that contain incommensurate substructures. Here we report inelastic neutron scattering measurements of phonon and magnon dispersions in Sr14Cu24O41, which contains incommensurate one-dimensional (1D) chain and two-dimensional (2D) ladder substructures. Two distinct pseudoacoustic phonon modes, corresponding to the sliding motion of one sublattice against the other, are observed for atomic motions polarized along the incommensurate axis. In the long wavelength limit, it is found that the sliding mode shows a remarkably small energy gap of 1.7–1.9 meV, indicating very weak interactions between the two incommensurate sublattices. The measurements also reveal a gapped and steep linear magnon dispersion of the ladder sublattice. The high group velocity of this magnon branch and weak coupling with acoustic and pseudoacoustic phonons can explain the large magnon thermal conductivity in Sr14Cu24O41 crystals. In addition, the magnon specific heat is determined from the measured total specific heat and phonon density of states and exhibits a Schottky anomaly due to gapped magnon modes of the spin chains. Furthermore, these findings offer new insights into the phonon and magnon dynamics and thermal transport properties of incommensurate magnetic crystals that contain low-dimensional substructures.},

  doi          = {10.1103/PhysRevB.94.134309},

  journal      = {Physical Review B},

  number       = 13,

  volume       = 94,

  place        = {United States},

  year         = {Fri Oct 21 00:00:00 EDT 2016},

  month        = {Fri Oct 21 00:00:00 EDT 2016}

}

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Works referencing / citing this record:

Effects of Ca substitution on quasiacoustic sliding modes in ${Sr}_{14 - x} {Ca}_{x} {Cu}_{24} O_{41}$
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Constable, E.; Squires, A. D.; Horvat, J.
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Title: Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound S r 14 C u 24 O 41

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Anomalous Dispersion of LO Phonons in La 1.85 Sr 0.15 CuO 4 at Low Temperatures journal, January 1999

Magnetic excitations from the singlet ground state in the S =1/2 quasi-one-dimensional system Sr 14 − x Y x Cu 24 O 41 journal, November 1996

Structural transition, electrical and magnetic properties of the B-site Co doped Sr 14 Cu 24 O 41 compounds journal, January 2009

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

Statics and dynamics of incommensurate lattices journal, September 1978

Macroscopic Quantum Coherence of the Spin Triplet in the Spin-Ladder Compound Sr 14 Cu 24 O 41 journal, August 2010

Low-frequency structural dynamics in the incommensurate composite crystal Bi 2 Sr 2 CuO 6 + δ journal, April 2004

Alchemists' Gold, Hg 2.86 Asf 6 ; An X-Ray Crystallographic Study of A Novel Disordered Mercury Compound Containing Metallically Bonded Infinite Cations journal, March 1974

Sound modes in composite incommensurate crystals journal, April 2002

Direct observation of singlet-triplet separation in dimeric copper(II) acetate by neutron inelastic scattering spectroscopy journal, April 1979

Quasicrystals: A New Class of Ordered Structures journal, December 1984

Acoustic phonons in the aperiodic layered crystal of Bi 2 Sr 2 CaCu 2 O 8 + δ journal, July 2001

Approaching the Minimum Thermal Conductivity in Rhenium-Substituted Higher Manganese Silicides journal, May 2014

Energy gap in the phonon dispersion of the linear mercury chains in Hg3−σAsF6 journal, February 1979

Surprises on the Way from One- to Two-Dimensional Quantum Magnets: The Ladder Materials journal, February 1996

Inelastic-neutron-scattering studies of a quasi-one-dimensional charge-density-wave system: Characterization of interchain interactions journal, August 1998

Raman scattering of Sr14−xCaxCu24O41 journal, June 2000

The potential of higher manganese silicide as an optoelectronic thin film material journal, August 2004

Crystal growth of pure and substituted low-dimensionality cuprates CuGeO3, La2CuO4, SrCuO2, Sr2CuO3 and Sr14Cu24O41 by the floating zone and travelling solvent zone methods journal, March 1999

Energy gap in the phonon spectrum of incommensurate lattices: The role of Coulomb forces journal, February 1980

Phonon-Magnon Interaction in Low Dimensional Quantum Magnets Observed by Dynamic Heat Transport Measurements journal, April 2013

Mixed Acoustic Phonons and Phase Modes in an Aperiodic Composite Crystal journal, November 2011

Spin-gap evolution upon Ca doping in the spin-ladder series Sr 14 − x Ca x Cu 24 O 41 studied by inelastic neutron scattering journal, July 2013

Quasi-two-dimensional hole ordering and dimerized state in the CuO 2 -chain layers in Sr 14 Cu 24 O 41 journal, January 1999

Superconductivity in the Ladder Material Sr 0.4 Ca 13.6 Cu 24 O 41.84 journal, September 1996

Magnetic excitations and structural change in the S = 1 2 quasi-one-dimensional magnet Sr 14 − x Y x Cu 24 O 41 ( 0 <~ x <~ 1 ) journal, December 1997

Long-wavelength phonons in incommensurate systems journal, July 1983

Microscopic origin of dimerization in the CuO 2 chains in Sr 14 Cu 24 O 41 journal, December 1996

Long-wavelength excitations in incommensurate intergrowth compounds with application to Hg 3 − δ As F 6 journal, November 1982

Van der Waals heterostructures journal, July 2013

Neutron investigation of the dynamical properties of the mercury-chain compound Hg 3 − δ As F 6 journal, July 1979

Magnon-phonon coupling in the spin-ladder compound Ca 9 La 5 Cu 24 O 41 measured by time-domain thermoreflectance journal, January 2014

A neutron diffraction investigation of the crystal and molecular structure of the anisotropic superconductor trimercury hexafluoroarsenate journal, March 1978

Crystal growth of manganese silicide, MnSi?1.73 and semiconducting properties of Mn15Si26 journal, February 1981

Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2 journal, June 2013

Phonon Energy Gaps in the Charged Incommensurate Planes of the Spin-Ladder Sr 14 Cu 24 O 41 Compound by Raman and Infrared Spectroscopy journal, May 2012

Thermal Conductivity of the Hole-Doped Spin Ladder System Sr 1 4 − x Ca x Cu 24 O 41 journal, March 2000

Magnon heat transport in ( Sr , Ca , La ) 14 Cu 24 O 41 journal, October 2001

Spin Dynamics of the Spin-Ladder Dimer-Chain Material Sr 14 Cu 24 O 41 journal, August 1998

Spin dynamics in the magnetic chain arrays of Sr 14 Cu 24 O 41 : A neutron inelastic scattering investigation journal, January 1999

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

The aperiodic nature of incommensurately modulated structures journal, January 2013

Incommensurate Systems as Model Compounds for Disorder Revealing Low-Temperature Glasslike Behavior journal, May 2015

One-Dimensional Phonons and "Phase-Ordering" Phase Transition in Hg 3 − δ As F 6 journal, December 1977

Magnetic resonance, susceptibility and elastic constants of the quasi-one-dimensional system Sr14Cu24O41 journal, July 1997

The spin-ladder and spin-chain system (La,Y,Sr,Ca)14Cu24O41: Electronic phases, charge and spin dynamics journal, May 2006

Effect of Ca substitution and pressure on the transport and magnetic properties of Sr 14 Cu 24 O 41 with doped two-leg Cu-O ladders journal, February 1997

Optical properties of the spin-ladder compound Sr 14 Cu 24 O 41 journal, August 2000

Twisting phonons in complex crystals with quasi-one-dimensional substructures journal, April 2015

Periodic hole structure in a spin-chain ladder material Sr 14 Cu 24 O 41 journal, July 2002

Excitation spectra of the linear alternating antiferromagnet journal, June 1982

Effects of Ca substitution on quasiacoustic sliding modes in Sr 14 − x Ca x Cu 24 O 41 journal, November 2019

Glass-like thermal conductivity in nanostructures of a complex anisotropic crystal journal, December 2017

Strong coupling superconductivity in a quasiperiodic host-guest structure journal, April 2018

Simplest phonons and pseudo-phonons in field theory journal, December 2019

Strong coupling superconductivity in a quasiperiodic host-guest structure. journalarticle, January 2018

Title: Weak coupling of pseudoacoustic phonons and magnon dynamics in the incommensurate spin-ladder compound $S r_{14} C u_{24} O_{41}$

Anomalous Dispersion of LO Phonons in ${La}_{1.85} {Sr}_{0.15} {CuO}_{4}$ at Low Temperatures
journal, January 1999

Magnetic excitations from the singlet ground state in the S =1/2 quasi-one-dimensional system ${Sr}_{14 - x}$ $Y_{x}$ ${Cu}_{24}$ $O_{41}$
journal, November 1996

Structural transition, electrical and magnetic properties of the B-site Co doped Sr ₁₄ Cu ₂₄ O ₄₁ compounds
journal, January 2009

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

Statics and dynamics of incommensurate lattices
journal, September 1978

Macroscopic Quantum Coherence of the Spin Triplet in the Spin-Ladder Compound ${Sr}_{14} {Cu}_{24} O_{41}$
journal, August 2010

Low-frequency structural dynamics in the incommensurate composite crystal Bi ₂ Sr ₂ CuO _{6 + δ}
journal, April 2004

Alchemists' Gold, Hg _2.86 Asf ₆ ; An X-Ray Crystallographic Study of A Novel Disordered Mercury Compound Containing Metallically Bonded Infinite Cations
journal, March 1974

Sound modes in composite incommensurate crystals
journal, April 2002

Direct observation of singlet-triplet separation in dimeric copper(II) acetate by neutron inelastic scattering spectroscopy
journal, April 1979

Quasicrystals: A New Class of Ordered Structures
journal, December 1984

Acoustic phonons in the aperiodic layered crystal of Bi ₂ Sr ₂ CaCu ₂ O _{8 + δ}
journal, July 2001

Approaching the Minimum Thermal Conductivity in Rhenium-Substituted Higher Manganese Silicides
journal, May 2014

Energy gap in the phonon dispersion of the linear mercury chains in Hg3−σAsF6
journal, February 1979

Surprises on the Way from One- to Two-Dimensional Quantum Magnets: The Ladder Materials
journal, February 1996

Inelastic-neutron-scattering studies of a quasi-one-dimensional charge-density-wave system: Characterization of interchain interactions
journal, August 1998

Raman scattering of Sr14−xCaxCu24O41
journal, June 2000

The potential of higher manganese silicide as an optoelectronic thin film material
journal, August 2004

Crystal growth of pure and substituted low-dimensionality cuprates CuGeO3, La2CuO4, SrCuO2, Sr2CuO3 and Sr14Cu24O41 by the floating zone and travelling solvent zone methods
journal, March 1999

Energy gap in the phonon spectrum of incommensurate lattices: The role of Coulomb forces
journal, February 1980

Phonon-Magnon Interaction in Low Dimensional Quantum Magnets Observed by Dynamic Heat Transport Measurements
journal, April 2013

Mixed Acoustic Phonons and Phase Modes in an Aperiodic Composite Crystal
journal, November 2011

Spin-gap evolution upon Ca doping in the spin-ladder series Sr $_{14 - x}$ Ca $_{x}$ Cu $_{24}$ O $_{41}$ studied by inelastic neutron scattering
journal, July 2013

Quasi-two-dimensional hole ordering and dimerized state in the ${CuO}_{2}$ -chain layers in ${Sr}_{14} {Cu}_{24} O_{41}$
journal, January 1999

Superconductivity in the Ladder Material Sr _0.4 Ca _13.6 Cu ₂₄ O _41.84
journal, September 1996

Magnetic excitations and structural change in the $S = \frac{1}{2}$ quasi-one-dimensional magnet ${Sr}_{14 - x} Y_{x} {Cu}_{24} O_{41}$ $(0 <~ x <~ 1)$
journal, December 1997

Long-wavelength phonons in incommensurate systems
journal, July 1983

Microscopic origin of dimerization in the ${CuO}_{2}$ chains in ${Sr}_{14}$ ${Cu}_{24}$ $O_{41}$
journal, December 1996

Long-wavelength excitations in incommensurate intergrowth compounds with application to ${Hg}_{3 - δ} As F_{6}$
journal, November 1982

Van der Waals heterostructures
journal, July 2013

Neutron investigation of the dynamical properties of the mercury-chain compound ${Hg}_{3 - δ} As F_{6}$
journal, July 1979

Magnon-phonon coupling in the spin-ladder compound ${Ca}_{9}$ ${La}_{5}$ ${Cu}_{24}$ $O_{41}$ measured by time-domain thermoreflectance
journal, January 2014

A neutron diffraction investigation of the crystal and molecular structure of the anisotropic superconductor trimercury hexafluoroarsenate
journal, March 1978

Crystal growth of manganese silicide, MnSi?1.73 and semiconducting properties of Mn15Si26
journal, February 1981

Glass-like phonon scattering from a spontaneous nanostructure in AgSbTe2
journal, June 2013

Phonon Energy Gaps in the Charged Incommensurate Planes of the Spin-Ladder ${Sr}_{14} {Cu}_{24} O_{41}$ Compound by Raman and Infrared Spectroscopy
journal, May 2012

Thermal Conductivity of the Hole-Doped Spin Ladder System ${Sr}_{14 - x} {Ca}_{x} {Cu}_{24} O_{41}$
journal, March 2000

Magnon heat transport in $(Sr, Ca, La)_{14} {Cu}_{24} O_{41}$
journal, October 2001

Spin Dynamics of the Spin-Ladder Dimer-Chain Material ${Sr}_{14} {Cu}_{24} O_{41}$
journal, August 1998

Spin dynamics in the magnetic chain arrays of ${Sr}_{14} {Cu}_{24} O_{41} :$ A neutron inelastic scattering investigation
journal, January 1999

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

The aperiodic nature of incommensurately modulated structures
journal, January 2013

Incommensurate Systems as Model Compounds for Disorder Revealing Low-Temperature Glasslike Behavior
journal, May 2015

One-Dimensional Phonons and "Phase-Ordering" Phase Transition in ${Hg}_{3 - δ} As F_{6}$
journal, December 1977

Magnetic resonance, susceptibility and elastic constants of the quasi-one-dimensional system Sr14Cu24O41
journal, July 1997

The spin-ladder and spin-chain system (La,Y,Sr,Ca)14Cu24O41: Electronic phases, charge and spin dynamics
journal, May 2006

Effect of Ca substitution and pressure on the transport and magnetic properties of ${Sr}_{14}$ ${Cu}_{24}$ $O_{41}$ with doped two-leg Cu-O ladders
journal, February 1997

Optical properties of the spin-ladder compound ${Sr}_{14} {Cu}_{24} O_{41}$
journal, August 2000

Twisting phonons in complex crystals with quasi-one-dimensional substructures
journal, April 2015

Periodic hole structure in a spin-chain ladder material ${Sr}_{14} {Cu}_{24} O_{41}$
journal, July 2002

Excitation spectra of the linear alternating antiferromagnet
journal, June 1982

Effects of Ca substitution on quasiacoustic sliding modes in ${Sr}_{14 - x} {Ca}_{x} {Cu}_{24} O_{41}$
journal, November 2019

Glass-like thermal conductivity in nanostructures of a complex anisotropic crystal
journal, December 2017

Strong coupling superconductivity in a quasiperiodic host-guest structure
journal, April 2018

Simplest phonons and pseudo-phonons in field theory
journal, December 2019

Strong coupling superconductivity in a quasiperiodic host-guest structure.
journalarticle, January 2018