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Unconventional Phases in Doped or Frustrated Quantum Antiferromagnets
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A Systematic QMC Study
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Artikel-Nr:
9783639703856
Seiten:
124
Autor:
Wenjun Hu
Format:
220x150x0 mm
Sprache:
Englisch
Beschreibung:
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.
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.