55 citations · 473 across the 65 of their papers we have counts for
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Anapoles and other magneto-electric multipoles in BaFe2Se3
S W Lovesey, D D Khalyavin
We submit that the magnetic space-group Cac (#9.41) is consistent with the established magnetic structure of BaFe2Se3, with magnetic dipole moments in a motif that uses two ladders…
A model of magneto-electric multipoles
S. W. Lovesey
An ancient Hamiltonian of electrons with entangled spin and orbital degrees of freedom is re-examined as a model of magneto-electric multipoles. In the model, a magnetic charge and…
Symmetry of re-entrant tetragonal phase in Ba1-xNaxFe2As2: Magnetic versus orbital ordering mechanism
D. D. Khalyavin, S. W. Lovesey, P. Manuel +5
Magneto-structural phase transitions in Ba1-xAxFe2As2 (A = K, Na) materials are discussed for both magnetically and orbitally driven mechanisms, using a symmetry analysis formulate…
Ferro-type order of magneto-electric quadrupoles as an order-parameter for the pseudo-gap phase of a cuprate superconductor
S. W. Lovesey, D. D. Khalyavin, U. Staub
Understanding the pseudo-gap phase from which a superconducting state emerges is a central problem in the physics of cuprates. The phase exists below a temperature T* for less than…
Strange magnetic multipoles and neutron diffraction by an iridate perovskite (Sr2IrO4)
S W Lovesey, D D Khalyavin
A theoretical investigation of a plausible construct for electronic structure in iridate perovskites demonstrates the existence of magnetic multipoles hitherto not identified. The…
Magneto-electric operators in neutron scattering
S W Lovesey
We succeed in deriving an exact expression for the magnetic interaction of neutrons and electrons including magneto-electric operators, allowed in the absence of a centre of invers…