59 citations · 350 across the 28 of their papers we have counts for
13 papers · 1 filter
Anomalous mirror symmetry breaking in a model insulating cuprate SrCuOCl
A. de la Torre, K. L. Seyler, L. Zhao +8
Understanding the complex phase diagram of cuprate superconductors is an outstanding challenge. The most actively studied questions surround the nature of the pseudogap and strange…
The magnetic ground state of Sr2IrO4 and implications for second-harmonic generation
S. Di Matteo, M. R. Norman
The currently accepted magnetic ground state of Sr2IrO4 (the -++- state) preserves inversion symmetry. This is at odds, though, with recent experiments that indicate a magnetoelect…
Mean-field solution of the Hubbard model: the magnetic phase diagram
Yann Claveau, Brice Arnaud, Sergio Di Matteo
The present paper is based on our graduate lectures in condensed-matter physics. We found that the mean-field solution of the Hubbard model is an excellent tool to stimulate studen…
Origin of magnetism and quasiparticles properties in Cr-doped TiO
F. Da Pieve, S. Di Matteo, T. Rangel +4
Combining LSDA+ and an analysis of superexchange interactions beyond DFT, we describe the magnetic ground states in rutile and anatase Cr-doped TiO. In parallel, we correct…
Orbital currents, anapoles, and magnetic quadrupoles in CuO
S. Di Matteo, M. R. Norman
We show that orbital currents in a CuO2 plane, if present, should be described by two independent parity and time-reversal odd order parameters, a toroidal dipole (anapole) and a m…
Variational study of the antiferromagnetic insulating phase of V2O3 based on Nth order Muffin-Tin-Orbitals
N. B. Perkins, S. Di Matteo, C. R. Natoli
Motivated by recent results of th order muffin-tin orbital (NMTO) implementation of the density functional theory (DFT), we re-examine low-temperature ground-state properties of…
A critical re-examination of resonant soft x-ray Bragg forbidden reflections in magnetite
S. B. Wilkins, S. Di Matteo, T. A. W. Beale +6
Magnetite, FeO, displays a highly complex low temperature crystal structure that may be charge and orbitally ordered. Many of the recent experimental claims of such orderin…
A brief note about VO
S. Di Matteo
This note summarizes some recently published results, that are reported in cond-mat today. Its aim is twofold. First, I believe that it is worthwhile to clarify the theoretical int…
Structural dichroism in the antiferromagnetic insulating phase of VO
C. Meneghini, S. Di Matteo, C. Monesi +6
We performed near-edge x-ray absorption spectroscopy (XANES) at V K edge in the antiferromagnetic insulating (AFI) phase of a 2.8% Cr-doped VO single crystal. Linear dichro…
On the nature of the magnetic ground-state wave function of VO
S. Di Matteo
After a brief historical introduction, we dwell on two recent experiments in the low-temperature, monoclinic phase of VO: K-edge resonant x-ray scattering and non-reciproca…
The implications of resonant x-ray scattering data on the physics of the insulating phase of VO
Y. Joly, S. Di Matteo, C. R. Natoli
We have performed a quantitative analysis of recent resonant x-ray scattering experiments carried out in the antiferromagnetic phase of VO by means of numerical ab-initio s…
A critical reexamination of the non-reciprocal x-ray gyrotropy in VO
S. Di Matteo, Y. Joly, C. R. Natoli
We critically review the experimental determination of the nonreciprocal x-ray gyrotropy in the monoclinic antiferromagnetic insulating phase of VO highlighting some of its…
Spin-1 effective Hamiltonian with three degenerate orbitals: An application to the case of VO
S. Di Matteo, N. B. Perkins, C. R. Natoli
Motivated by recent neutron and x-ray observations in VO, we derive the effective Hamiltonian in the strong coupling limit of an Hubbard model with three degenerate t_{2g}…