217 citations · 539 across the 15 of their papers we have counts for
18 papers · 1 filter
Quantum anisotropic Heisenberg chains with superlattice structure: a DMRG study
J. Silva-Valencia, J. C. Xavier, E. Miranda
Using the density matrix renormalization group technique, we study spin superlattices composed of a repeated pattern of two spin-1/2 XXZ chains with different anisotropy parameters…
Non-uniform phases in metals with local moments
Angsula Ghosh, E. Miranda
The two-dimensional Kondo lattice model with both nearest and next-nearest neighbor exchange interactions is studied within a mean-field approach and its phase diagram is determine…
Spin Liquid Behavior in Electronic Griffiths Phases
D. Tanaskovic, V. Dobrosavljevic, E. Miranda
We examine the interplay of the Kondo effect and the RKKY interactions in electronic Griffiths phases using extended dynamical mean-field theory methods. We find that sub-Ohmic dis…
Random Antiferromagnetic SU(N) Spin Chains
J. A. Hoyos, E. Miranda
We analyze random isotropic antiferromagnetic SU(N) spin chains using the real space renormalization group. We find that they are governed at low energies by a universal infinite r…
Phase Diagram of the Two-Leg Kondo Ladder
J. C. Xavier, E. Miranda, E. Dagotto
The phase diagram of the two-leg Kondo ladder is investigated using computational techniques. Ferromagnetism is present, but only at small conduction electron densities and robust…
Effective model of the electronic Griffiths phase
D. Tanaskovic, E. Miranda, V. Dobrosavljevic
We present simple analytical arguments explaining the universal emergence of electronic Griffiths phases as precursors of disorder-driven metal-insulator transitions in correlated…