Magnetic correlations in deuteronium jarosite, a model S = 5/2 Kagomé antiferromagnet
نویسندگان
چکیده
منابع مشابه
Possible Néel orderings of the Kagomé antiferromagnet.
Possible Néel orderings of antiferromagnetically coupled spins on a kagomé lattice are studied using linearspin-wave theory and high-temperature expansions. Spin-wave analysis, applied to q=0 (three spins per magnetic unit cell) and to √3 × √3 (nine spins per cell) Néel orderings yield identical excitation spectra with twofold-degenerate linear modes and a dispersionless zero-energy mode. This ...
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Geometric spin frustration occurs when the structural arrangement of spins precludes the simultaneous satisfaction of all nearestneighbor interactions.1,2 The corner-sharing equilateral triangles of a kagomé lattice present an excellent construct on which to study spin frustration; spin liquid physics can result when the kagomé lattice features S ) /2 spins on lattice vertices.3-5 However, comp...
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In order to study the magnetic properties of frustrated metallic systems, we present, for the first time, quantum Monte Carlo data on the magnetic susceptibility of the Hubbard model on triangular and kagomé lattices. We show that the underlying lattice structure determines the nature and the doping dependence of the magnetic fluctuations. In particular, in the doped kagomé case we find strong ...
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We present thermodynamic and neutron data on Ni3V2O8, a spin-1 system on a kagomé staircase. The extreme degeneracy of the kagomé antiferromagnet is lifted to produce two incommensurate phases at finite T--one amplitude modulated, the other helical--plus a commensurate canted antiferromagnet for T-->0. The H-T phase diagram is described by a model of competing first and second neighbor interact...
متن کاملMagnetic ordering and fluctuation in kagomé lattice antiferromagnets , Fe and Cr jarosites
Jarosite family compounds, KFe3(OH)6(SO4)2, (abbreviate Fe jarosite), and KCr3(OH)6(SO4)2, (Cr jarosite), are typical examples of the Heisenberg antiferromagnet on the kagomé lattice and have been investigated by means of magnetization and NMR experiments. The susceptibility of Cr jarosite deviates from Curie-Weiss law due to the short-range spin correlation below about 150K and shows the magne...
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ژورنال
عنوان ژورنال: Europhysics Letters (EPL)
سال: 1998
ISSN: 0295-5075,1286-4854
DOI: 10.1209/epl/i1998-00250-2