Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe2Se3

Mourigal, M.; Wu, Shan; Stone, M. B.; Neilson, J. R.; Caron, J. M.; McQueen, T. M.; Broholm, C. L.

doi:10.1103/PhysRevLett.115.047401

Title: Block Magnetic Excitations in the Orbitally Selective Mott Insulator ${BaFe}_{2} {Se}_{3}$

Abstract

Iron pnictides and selenides display a variety of unusual magnetic phases originating from the interplay between electronic, orbital, and lattice degrees of freedom. Using powder inelastic neutron scattering on the two-leg ladder $$BaFe_2Se_3$$, we fully characterize the static and dynamic spin correlations associated with the Fe₄ block state, an exotic magnetic ground state observed in this low-dimensional magnet and in Rb_0.89Fe_1.58Se₂. All the magnetic excitations of the Fe₄ block state predicted by an effective Heisenberg model with localized spins are observed below 300 meV and quantitatively reproduced. However, the data only account for 16(3)$$μ^2_B$$ per Fe²⁺, approximatively 2/3 of the total spectral weight expected for localized S=2 moments. Our results highlight how orbital degrees of freedom in iron-based magnets can conspire to stabilize an exotic magnetic state.

Authors:

Mourigal, M. ^[1]; Wu, Shan ^[1]; Stone, M. B. ^[2]; Neilson, J. R. ^[3]; Caron, J. M. ^[3]; McQueen, T. M. ^[4]; Broholm, C. L. ^[5]

Johns Hopkins Univ., Baltimore, MD (United States). Inst. for Quantum Matter and Dept. of Physics and Astronomy
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
Johns Hopkins Univ., Baltimore, MD (United States). Inst. for Quantum Matter and Dept. of Physics and Astronomy; Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemistry
Johns Hopkins Univ., Baltimore, MD (United States). Inst. for Quantum Matter and Dept. of Physics and Astronomy; Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Chemistry, and Dept. of Materials Science and Engineering
Johns Hopkins Univ., Baltimore, MD (United States). Inst. for Quantum Matter and Dept. of Physics and Astronomy; Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division; Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Materials Science and Engineering

Publication Date:: Thu Jul 23 00:00:00 EDT 2015

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

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

OSTI Identifier:: 1528744

Alternate Identifier(s):: OSTI ID: 1201014

Grant/Contract Number:: AC05-00OR22725; FG02-08ER46544

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 115; Journal Issue: 4; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Mourigal, M., Wu, Shan, Stone, M. B., Neilson, J. R., Caron, J. M., McQueen, T. M., and Broholm, C. L. Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe2Se3.  United States: N. p., 2015. 
Web.  doi:10.1103/PhysRevLett.115.047401.

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                    Mourigal, M., Wu, Shan, Stone, M. B., Neilson, J. R., Caron, J. M., McQueen, T. M., & Broholm, C. L. Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe2Se3.  United States.  https://doi.org/10.1103/PhysRevLett.115.047401

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                    Mourigal, M., Wu, Shan, Stone, M. B., Neilson, J. R., Caron, J. M., McQueen, T. M., and Broholm, C. L. Thu .  
"Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe2Se3".  United States.  https://doi.org/10.1103/PhysRevLett.115.047401.  https://www.osti.gov/servlets/purl/1528744.

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@article{osti_1528744,

  title        = {Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe2Se3},

  author       = {Mourigal, M. and Wu, Shan and Stone, M. B. and Neilson, J. R. and Caron, J. M. and McQueen, T. M. and Broholm, C. L.},

  abstractNote = {Iron pnictides and selenides display a variety of unusual magnetic phases originating from the interplay between electronic, orbital, and lattice degrees of freedom. Using powder inelastic neutron scattering on the two-leg ladder $BaFe_2Se_3$, we fully characterize the static and dynamic spin correlations associated with the Fe4 block state, an exotic magnetic ground state observed in this low-dimensional magnet and in Rb0.89Fe1.58Se2. All the magnetic excitations of the Fe4 block state predicted by an effective Heisenberg model with localized spins are observed below 300 meV and quantitatively reproduced. However, the data only account for 16(3)$μ^2_B$ per Fe2+, approximatively 2/3 of the total spectral weight expected for localized S=2 moments. Our results highlight how orbital degrees of freedom in iron-based magnets can conspire to stabilize an exotic magnetic state.},

  doi          = {10.1103/PhysRevLett.115.047401},

  journal      = {Physical Review Letters},

  number       = 4,

  volume       = 115,

  place        = {United States},

  year         = {Thu Jul 23 00:00:00 EDT 2015},

  month        = {Thu Jul 23 00:00:00 EDT 2015}

}

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https://doi.org/10.1103/PhysRevLett.115.047401

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Figures / Tables:

FIG. 1: (a) Crystal structure of BaFe₂Se₃ with a=11.88 Å, b=5.41 Å and c=9.14 Å. Ba-atoms are omitted. The Fe₄ block ground-state is represented with light (spindown) and dark (spin-up) bold arrows. (b) Structure of an individual ladder. (c) Values of exchange interactions determined from our data using an effectivemore »

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TABLE I (p. 4)

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Similar Records

Title: Block Magnetic Excitations in the Orbitally Selective Mott Insulator BaFe 2 Se 3

Abstract

Citation Formats

Figures / Tables:

Exotic Magnetic Order in the Orbital-Selective Mott Regime of Multiorbital Systems journal, March 2014

Resonant inelastic x-ray scattering at the Fe L 3 edge of the one-dimensional chalcogenide BaFe 2 Se 3 journal, October 2013

Phonon and magnetic dimer excitations in Fe-based S = 2 spin-ladder compound BaFe 2 Se 2 O journal, January 2014

Spin Disorder on a Triangular Lattice journal, September 2005

The synthesis, and crystal and magnetic structure of the iron selenide BaFe 2 Se 3 with possible superconductivity at T c = 11 K journal, September 2011

Spin–orbital separation in the quasi-one-dimensional Mott insulator Sr2CuO3 journal, April 2012

Stripelike magnetism in a mixed-valence insulating state of the Fe-based ladder compound CsFe 2 Se 3 journal, June 2012

Numerical simulations and magnetism journal, January 2011

Structure and physical properties of the layered iron oxychalcogenide BaFe 2 Se 2 O journal, November 2012

Anisotropy in BaFe 2 Se 3 single crystals with double chains of FeSe tetrahedra journal, December 2011

Spin waves and magnetic exchange interactions in CaFe2As2 journal, July 2009

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

Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2 journal, September 2011

Nature of magnetic excitations in superconducting BaFe1.9Ni0.1As2 journal, March 2012

Insulating magnetism in vacancy-ordered K 0.8 Fe 1.6 Se 2 journal, August 2012

Magnetism in Fe-based superconductors journal, April 2010

Magnetism, superconductivity, and pairing symmetry in iron-based superconductors journal, October 2008

Spin glass and semiconducting behavior in one-dimensional BaFe 2 − δ Se 3 ( δ ≈ 0.2 ) crystals journal, December 2011

Common Crystalline and Magnetic Structure of Superconducting A 2 Fe 4 Se 5 ( A = K , Rb , Cs , Tl ) Single Crystals Measured Using Neutron Diffraction journal, September 2011

Unified one-band Hubbard model for magnetic and electronic spectra of the parent compounds of cuprate superconductors journal, March 2012

Magnetic states of the two-leg-ladder alkali metal iron selenides A Fe 2 Se 3 journal, January 2013

Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe 2 Se 3 journal, February 2012

Spin Waves in the ( π , 0 ) Magnetically Ordered Iron Chalcogenide Fe 1.05 Te journal, February 2011

Crystallization of charge holes in the spin ladder of Sr14Cu24O41 journal, October 2004

Strong Correlations from Hund’s Coupling journal, April 2013

Magnetic structure of quasi-one-dimensional antiferromagnetic TaFe 1 + y Te 3 journal, June 2012

Orbital-selective magnetism in the spin-ladder iron selenides Ba 1 − x K x Fe 2 Se 3 journal, May 2012

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BaFe 2 S e 3 : A High T C Magnetic Multiferroic with Large Ferrielectric Polarization journal, October 2014

High-energy spin excitations in BaFe 2 As 2 observed by inelastic neutron scattering journal, December 2008

Linear spin wave theory for single-Q incommensurate magnetic structures journal, March 2015

Nematic spin fluid in the tetragonal phase of BaFe 2 As 2 journal, August 2011

Magnetism and its microscopic origin in iron-based high-temperature superconductors journal, October 2012

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

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides journal, January 2012

Confinement of fractional quantum number particles in a condensed-matter system journal, November 2009

X-Ray Diffraction in Random Layer Lattices journal, May 1941

Colloquium : The unexpected properties of alkali metal iron selenide superconductors journal, May 2013

Crystallization of Charge Holes in the Spin Ladder of Sr14Cu24O41. journal, January 2005

The synthesis, and crystal and magnetic structure of the iron selenide BaFe 2 Se 3 with possible superconductivity at T c = 11 K journal, January 2012

Spin Waves and Magnetic Exchange Interactions in CaFe2As2 text, January 2009

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides text, January 2011

Nature of magnetic excitations in superconducting BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$ text, January 2012

Magnetism and its microscopic origin in iron-based high-temperature superconductors text, January 2012

Exotic magnetic order in the orbital-selective Mott regime of multiorbital systems text, January 2014

Linear spin wave theory for single-Q incommensurate magnetic structures text, January 2014

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S) journal, November 2019

Spin dynamics of the block orbital-selective Mott phase journal, September 2018

Fingerprints of an orbital-selective Mott phase in the block magnetic state of BaFe2Se3 ladders journal, June 2019

The synthesis and magnetic properties of BaFe 2 Se 3 single crystals journal, January 2017

Crystal structure determination under high pressure in the iron-based ladder superconductor BaFe 2 S 3 journal, August 2018

Spin interactions and magnetic order in the iron oxychalcogenides BaFe 2 Q 2 O ( Q = S and Se ) journal, July 2019

The magnetic precursor of the pressure-induced superconductivity in Fe-ladder compound text, January 2016

Fingerprints of an Exotic Orbital-Selective Mott Phase in the Block Magnetic State of BaFe$_2$Se$_3$ Ladders text, January 2018

Title: Block Magnetic Excitations in the Orbitally Selective Mott Insulator ${BaFe}_{2} {Se}_{3}$

Exotic Magnetic Order in the Orbital-Selective Mott Regime of Multiorbital Systems
journal, March 2014

Resonant inelastic x-ray scattering at the Fe $L_{3}$ edge of the one-dimensional chalcogenide BaFe $_{2}$ Se $_{3}$
journal, October 2013

Phonon and magnetic dimer excitations in Fe-based $S = 2$ spin-ladder compound BaFe $_{2}$ Se $_{2}$ O
journal, January 2014

Spin Disorder on a Triangular Lattice
journal, September 2005

The synthesis, and crystal and magnetic structure of the iron selenide BaFe ₂ Se ₃ with possible superconductivity at T _c = 11 K
journal, September 2011

Spin–orbital separation in the quasi-one-dimensional Mott insulator Sr2CuO3
journal, April 2012

Stripelike magnetism in a mixed-valence insulating state of the Fe-based ladder compound CsFe $_{2}$ Se $_{3}$
journal, June 2012

Numerical simulations and magnetism
journal, January 2011

Structure and physical properties of the layered iron oxychalcogenide BaFe $_{2}$ Se $_{2}$ O
journal, November 2012

Anisotropy in BaFe $_{2}$ Se $_{3}$ single crystals with double chains of FeSe tetrahedra
journal, December 2011

Spin waves and magnetic exchange interactions in CaFe2As2
journal, July 2009

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

Spin waves and magnetic exchange interactions in insulating Rb0.89Fe1.58Se2
journal, September 2011

Nature of magnetic excitations in superconducting BaFe1.9Ni0.1As2
journal, March 2012

Insulating magnetism in vacancy-ordered K $_{0.8}$ Fe $_{1.6}$ Se $_{2}$
journal, August 2012

Magnetism in Fe-based superconductors
journal, April 2010

Magnetism, superconductivity, and pairing symmetry in iron-based superconductors
journal, October 2008

Spin glass and semiconducting behavior in one-dimensional BaFe $_{2 - δ}$ Se $_{3}$ ( $δ \approx 0.2)$ crystals
journal, December 2011

Common Crystalline and Magnetic Structure of Superconducting $A_{2} {Fe}_{4} {Se}_{5}$ ( $A = K, Rb, Cs, Tl$ ) Single Crystals Measured Using Neutron Diffraction
journal, September 2011

Unified one-band Hubbard model for magnetic and electronic spectra of the parent compounds of cuprate superconductors
journal, March 2012

Magnetic states of the two-leg-ladder alkali metal iron selenides $A$ Fe $_{2}$ Se $_{3}$
journal, January 2013

Block magnetism coupled with local distortion in the iron-based spin-ladder compound BaFe $_{2}$ Se $_{3}$
journal, February 2012

Spin Waves in the $(π, 0)$ Magnetically Ordered Iron Chalcogenide ${Fe}_{1.05} Te$
journal, February 2011

Crystallization of charge holes in the spin ladder of Sr14Cu24O41
journal, October 2004

Strong Correlations from Hund’s Coupling
journal, April 2013

Magnetic structure of quasi-one-dimensional antiferromagnetic TaFe $_{1 + y}$ Te $_{3}$
journal, June 2012

Orbital-selective magnetism in the spin-ladder iron selenides Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ Se $_{3}$
journal, May 2012

Iron displacements and magnetoelastic coupling in the antiferromagnetic spin-ladder compound BaFe $_{2}$ Se $_{3}$
journal, November 2011

${BaFe}_{2} S e_{3}$ : A High $T_{C}$ Magnetic Multiferroic with Large Ferrielectric Polarization
journal, October 2014

High-energy spin excitations in ${BaFe}_{2} {As}_{2}$ observed by inelastic neutron scattering
journal, December 2008

Linear spin wave theory for single-Q incommensurate magnetic structures
journal, March 2015

Nematic spin fluid in the tetragonal phase of BaFe $_{2}$ As $_{2}$
journal, August 2011

Magnetism and its microscopic origin in iron-based high-temperature superconductors
journal, October 2012

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

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
journal, January 2012

Confinement of fractional quantum number particles in a condensed-matter system
journal, November 2009

X-Ray Diffraction in Random Layer Lattices
journal, May 1941

Colloquium : The unexpected properties of alkali metal iron selenide superconductors
journal, May 2013

Crystallization of Charge Holes in the Spin Ladder of Sr14Cu24O41.
journal, January 2005

The synthesis, and crystal and magnetic structure of the iron selenide BaFe ₂ Se ₃ with possible superconductivity at T _c = 11 K
journal, January 2012

Spin Waves and Magnetic Exchange Interactions in CaFe2As2
text, January 2009

Preemptive nematic order, pseudogap, and orbital order in the iron pnictides
text, January 2011

Nature of magnetic excitations in superconducting BaFe$_{1.9}$Ni$_{0.1}$As$_{2}$
text, January 2012

Magnetism and its microscopic origin in iron-based high-temperature superconductors
text, January 2012

Exotic magnetic order in the orbital-selective Mott regime of multiorbital systems
text, January 2014

Linear spin wave theory for single-Q incommensurate magnetic structures
text, January 2014

Iron-Based Chalcogenide Spin Ladder BaFe2X3 (X = Se,S)
journal, November 2019

Spin dynamics of the block orbital-selective Mott phase
journal, September 2018

Fingerprints of an orbital-selective Mott phase in the block magnetic state of BaFe2Se3 ladders
journal, June 2019

The synthesis and magnetic properties of BaFe ₂ Se ₃ single crystals
journal, January 2017

Crystal structure determination under high pressure in the iron-based ladder superconductor BaFe ₂ S ₃
journal, August 2018

Spin interactions and magnetic order in the iron oxychalcogenides ${BaFe}_{2} Q_{2} O (Q = S and Se)$
journal, July 2019

The magnetic precursor of the pressure-induced superconductivity in Fe-ladder compound
text, January 2016

Fingerprints of an Exotic Orbital-Selective Mott Phase in the Block Magnetic State of BaFe$_2$Se$_3$ Ladders
text, January 2018