4 papers
Resonant Pair Exchange and Percolation in the Disordered Hubbard Model
Dariush Heidarian, Mustansir Barma, Nandini Trivedi
We show that the effect of disorder on a Mott-Hubbard insulator of interacting electrons produces a quantum phase transition from an antiferromagnetic to a paramagnetic phase gover…
Double-Exchange Model: Phase Diagram at Zero-Temperature
David Pekker, Swagatam Mukhopadhyay, Nandini Trivedi +1
The analytical zero-temperature phase diagram of the double exchange model for classical background spins as a function of the carrier density and Hund's coupling in the entire ran…
Spin-Orbit Effects in Diluted Magnetic Semiconductors
Byounghak Lee, Xavier Cartoixa, Nandini Trivedi +1
We present a theoretical study of diluted magnetic semiconductors that treats the local sp-d exchange interaction J between the itinerant carriers and the Mn d electrons within a r…
Spatial Inhomogeneities in Disordered d-Wave Superconductors: Effect on Density of States and Superfluid Stiffness
Amit Ghosal, Mohit Randeria, Nandini Trivedi
We study a short coherence length d-wave superconductor with finite density of unitary scatterers using the Bogoliubov-deGennes technique. We find that the low-energy density of st…