57 citations · 108 across the 7 of their papers we have counts for
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Is Herbertsmithite far from an ideal antiferromagnet? Ab-initio answer including in-plane Dzyaloshinskii-Moriya interactions and coupling with extra-plane impurities
Flaurent Heully-Alary, Nadia Ben Amor, Nicolas Suaud +3
Herbertsmithite is known as the archetype of a S=1/2 nearest-neighbor Heisenberg antiferromagnet on the Kagomé lattice, theoretically presumed to be a quantum gapless spin liquid.…
Ab initio study of the CE magnetic phase in half-doped manganites: Purely magnetic versus double exchange description
Roland Bastardis, Coen de Graaf, Nathalie Guihery
The leading electronic interactions governing the local physics of the CE phase of half-doped manganites are extracted from correlated ab initio calculations performed on an embedd…
Microscopic origin of isotropic non-Heisenberg behavior in highly correlated systems
Roland Bastardis, Nathalie Guihery, Coen de Graaf
We have reanalyzed the microscopic origin of the isotropic deviations that are observed from the energy spacings predicted by the HDVV Hamiltonian. Usually, a biquadratic spin oper…
A surprising relation between double exchange and Heisenberg model spectra: Application to half-doped manganites
Roland Bastardis, Nathalie Guihery, Nicolas Suaud
The Zener polarons recently found in half-doped manganites are usually seen as mixed valence entities ruled by a double exchange Hamiltonian involving only correlated electrons of…
Theoretical studies of the phase transition in the anisotropic 2-D square spin lattice
Mohamad Al Hajj, Nathalie Guihery, Jean-Paul Malrieu +1
The phase transition occurring in a square 2-D spin lattice governed by an anisotropic Heisenberg Hamiltonian has been studied according to two recently proposed methods. The first…
Decoupling of the S=1/2 antiferromagnetic zig-zag ladder with anisotropy
V. R. Vieira, N. Guihery, J. P. Rodriguez +1
The spin-1/2 antiferromagnetic zig-zag ladder is studied by exact diagonalization of small systems in the regime of weak inter-chain coupling. A gapless phase with quasi long-range…