85 citations · 447 across the 14 of their papers we have counts for
14 papers
Topological strongly correlated phases in orthorhombic diamond lattice compounds
Javier Castro Luaces, Manuel Fernández López, Jorge Bravo-Abad +1
We explore the Mott transition in orthorhombic diamond lattices relevant to (ET)Ag(CN) molecular compounds. The non-interacting phases include nodal line, Dirac and/or Weyl…
Effects of anisotropy in spin molecular-orbital coupling on effective spin models of trinuclear organometallic complexes
J. Merino, A. C. Jacko, A. L. Khosla +1
We consider layered decorated honeycomb lattices at two-thirds filling, as realized in some trinuclear organometallic complexes. Localized moments with a single-spin anisotro…
Low-energy effective theories of the two-thirds filled Hubbard model on the triangular necklace lattice
C. Janani, J. Merino, I. P. McCulloch +1
Motivated by MoS(dmit), we investigate the Hubbard model on the triangular necklace lattice at two-thirds filling. We show, using second order perturbation theory, that…
Pseudogap and singlet formation in cuprate and organic superconductors
J. Merino, O. Gunnarsson
The pseudogap phase occurring in cuprate and organic superconductors is analyzed based on the dynamical cluster approximation (DCA) approach to the Hubbard model. A cluster embedde…
Geometrical frustration effects on charge-driven quantum phase transitions
L. Cano-Cortes, A. Ralko, C. Fevrier +2
The interplay of Coulomb repulsion and geometrical frustration on charge-driven quantum phase transitions is explored. The ground state phase diagram of an extended Hubbard model o…
Quantum critical behavior of electrons at the edge of charge order
Laura Cano-Cortes, Jaime Merino, Simone Fratini
We consider quantum critical points (QCP) in which quantum fluctuations associated with charge rather than magnetic order induce unconventional metallic properties. Based on finite…
Electronic and magnetic properties of the ionic Hubbard model on the striped triangular lattice at 3/4 filling
J. Merino, R. H. McKenzie, B. J. Powell
We report a detailed study of a model Hamiltonian which exhibits a rich interplay of geometrical spin frustration, strong electronic correlations, and charge ordering. The characte…
Ionic Hubbard model on a triangular lattice for Na_0.5CoO_2, Rb_0.5CoO_2 and K_0.5CoO_2: Mean-field slave boson theory
B. J. Powell, J. Merino, Ross H. McKenzie
We introduce a strongly correlated mean-field theory of the ionic Hubbard model on the triangular lattice with alternating stripes of site energy using Barnes-Coleman slave bosons.…
Mott transition in two-dimensional frustrated compounds
A. Liebsch, H. Ishida, J. Merino
The phase diagrams of isotropic and anisotropic triangular lattices with local Coulomb interactions are evaluated within cluster dynamical mean field theory. As a result of partial…
Metal-insulator transition and charge ordering in the extended Hubbard model at one-quarter filling
M. Calandra, J. Merino, Ross H. McKenzie
We study with exact diagonalization the zero temperature properties of the quarter-filled extended Hubbard model on a square lattice. We find that increasing the ratio of the inter…
Magnetic-field-induced superconductivity in layered organic molecular crystals with localized magnetic moments
O. Cepas, Ross H. McKenzie, J. Merino
The synthetic organic compound lambda-(BETS)2FeCl4 undergoes successive transitions from an antiferromagnetic insulator to a metal and then to a superconductor as a magnetic field…
Charge ordering and antiferromagnetic exchange in layered molecular crystals of the theta type
Ross H. McKenzie, J. Merino, J. B. Marston +1
We consider the electronic properties of layered molecular crystals of the type theta-DA, where A is an anion and D is a donor molecule such as BEDT-TTF [where BEDT-TTF is bis-…
Phonon anomalies due to strong electronic correlations in layered organic metals
J. Merino, Ross H. McKenzie
We show how the coupling between the phonons and electrons in a strongly correlated metal can result in phonon frequencies which have a non-monotonic temperature dependence. Dynami…
Cyclotron effective masses in layered metals
J. Merino, Ross H. McKenzie
Many layered metals such as quasi-two-dimensional organic molecular crystals show properties consistent with a Fermi liquid description at low temperatures. The effective masses ex…