87 citations · 650 across the 17 of their papers we have counts for
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Quenching through Dirac and semi-Dirac points in optical Lattices: Kibble-Zurek scaling for anisotropic Quantum-Critical systems
Amit Dutta, R. R. P. Singh, Uma Divakaran
We propose that Kibble-Zurek scaling can be studied in optical lattices by creating geometries that support, Dirac, Semi-Dirac and Quadratic Band Crossings. On a Honeycomb lattice…
Spin-waves in the orthorombic square-lattice Heisenberg models: Application to the iron pnictide materials
R. Applegate, J. Oitmaa, R. R. P. Singh
Motivated by the observation of spatially anisotropic exchange constants in the iron pnictide materials, we study the spin-wave spectra of the Heisenberg mode…
Finite temperature spin-dynamics and phase transitions in spin-orbital models
C. -C. Chen, B. Moritz, J. van den Brink +2
We study finite temperature properties of a generic spin-orbital model relevant to transition metal compounds, having coupled quantum Heisenberg-spin and Ising-orbital degrees of f…
Quantum effects in a weakly-frustrated S=1/2 two-dimensional Heisenberg antiferromagnet in an applied magnetic field
N. Tsyrulin, T. Pardini, R. R. P. Singh +7
We have studied the two-dimensional S=1/2 square-lattice antiferromagnet using inelastic neutron scattering and series expansion calculations. We show that the…