Unconventional Phases in Doped or Frustrated Quantum Antiferromagnets

In present work, we apply state-of-the-art quantum Monte Carlo techniques, including the variational and the Green's function Monte Carlo with the fixed-node approximation, to investigate the ground-state properties of two strongly-correlated systems: the two-dimensional t-J model that can be used to study the high-temperature superconducting phase in the doped antiferromagnet, and the frustrated Neel antiferromagnet described by the J1-J2 Heisenberg model on the square lattice, which is widely considered as the prototype model for spin frustration.

Autorentext

Wenjun Hu obtained his Ph.D in theory and simulation of condensed matter from International School for Advanced Studies (SISSA) in 2013. Currently, Dr. Hu is a postdoctoral researcher in California State University, Northridge.