Spin-liquid behavior in a kagome antiferromagnet: Deuteronium jarosite

Bjorn Fak, Fiona Coomer, Andrew Harrison, Dirk Visser, M E Zhitomirsky

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The spin dynamics of the frustrated quasi-two-dimensional spin-5/2 Heisenberg antiferromagnetic kagome compound deuteronium jarosite, (D(3)O) Fe(3)(SO(4))(2)(OD)(6), has been studied using inelastic neutron scattering. The dynamic magnetic susceptibility shows a clear spin-liquid behavior with strong dynamic short-range correlations with staggered chirality, as seen from the wave vector dependence at finite-energy transfers. The magnetic scattering at low temperatures is gapless and extends out to at least 20 meV. The dynamics shows a non-exponential relaxation behavior but no dynamical w/T scaling. The characteristic energy (inverse relaxation rate) increases linearly with temperature.
LanguageEnglish
Article number17006
JournalEPL: A Letters Journal Exploring the Frontiers of Physics
Volume81
Issue number1
DOIs
Publication statusPublished - 2008

Fingerprint

liquids
spin dynamics
chirality
inelastic scattering
neutron scattering
energy transfer
magnetic permeability
scaling
scattering
temperature
energy

Keywords

  • pyrochlore antiferromagnet
  • simulation
  • magnetic excitations
  • neuton-scattering
  • potassium jarosite
  • range order
  • lattice

Cite this

Fak, Bjorn ; Coomer, Fiona ; Harrison, Andrew ; Visser, Dirk ; Zhitomirsky, M E. / Spin-liquid behavior in a kagome antiferromagnet : Deuteronium jarosite. In: EPL: A Letters Journal Exploring the Frontiers of Physics. 2008 ; Vol. 81, No. 1.
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abstract = "The spin dynamics of the frustrated quasi-two-dimensional spin-5/2 Heisenberg antiferromagnetic kagome compound deuteronium jarosite, (D(3)O) Fe(3)(SO(4))(2)(OD)(6), has been studied using inelastic neutron scattering. The dynamic magnetic susceptibility shows a clear spin-liquid behavior with strong dynamic short-range correlations with staggered chirality, as seen from the wave vector dependence at finite-energy transfers. The magnetic scattering at low temperatures is gapless and extends out to at least 20 meV. The dynamics shows a non-exponential relaxation behavior but no dynamical w/T scaling. The characteristic energy (inverse relaxation rate) increases linearly with temperature.",
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Spin-liquid behavior in a kagome antiferromagnet : Deuteronium jarosite. / Fak, Bjorn; Coomer, Fiona; Harrison, Andrew; Visser, Dirk; Zhitomirsky, M E.

In: EPL: A Letters Journal Exploring the Frontiers of Physics, Vol. 81, No. 1, 17006, 2008.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spin-liquid behavior in a kagome antiferromagnet

T2 - EPL: A Letters Journal Exploring the Frontiers of Physics

AU - Fak, Bjorn

AU - Coomer, Fiona

AU - Harrison, Andrew

AU - Visser, Dirk

AU - Zhitomirsky, M E

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N2 - The spin dynamics of the frustrated quasi-two-dimensional spin-5/2 Heisenberg antiferromagnetic kagome compound deuteronium jarosite, (D(3)O) Fe(3)(SO(4))(2)(OD)(6), has been studied using inelastic neutron scattering. The dynamic magnetic susceptibility shows a clear spin-liquid behavior with strong dynamic short-range correlations with staggered chirality, as seen from the wave vector dependence at finite-energy transfers. The magnetic scattering at low temperatures is gapless and extends out to at least 20 meV. The dynamics shows a non-exponential relaxation behavior but no dynamical w/T scaling. The characteristic energy (inverse relaxation rate) increases linearly with temperature.

AB - The spin dynamics of the frustrated quasi-two-dimensional spin-5/2 Heisenberg antiferromagnetic kagome compound deuteronium jarosite, (D(3)O) Fe(3)(SO(4))(2)(OD)(6), has been studied using inelastic neutron scattering. The dynamic magnetic susceptibility shows a clear spin-liquid behavior with strong dynamic short-range correlations with staggered chirality, as seen from the wave vector dependence at finite-energy transfers. The magnetic scattering at low temperatures is gapless and extends out to at least 20 meV. The dynamics shows a non-exponential relaxation behavior but no dynamical w/T scaling. The characteristic energy (inverse relaxation rate) increases linearly with temperature.

KW - pyrochlore antiferromagnet

KW - simulation

KW - magnetic excitations

KW - neuton-scattering

KW - potassium jarosite

KW - range order

KW - lattice

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JO - EPL: A Letters Journal Exploring the Frontiers of Physics

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