Publications (59)
Incipient and well-developed entropy plateaus in spin-S Kitaev models
J. Oitmaa, A. Koga, R. R. P. Singh
Studies of Quantum Spin Ladders at T=0 and at High Temperatures by Series Expansions
J. Oitmaa, Rajiv R. P Singh, Zheng Weihong
A Frustrated 3-Dimensional Antiferromagnet: Stacked $J_{1}-J_{2}$ Layers
Onofre Rojas, C. J. Hamer, J. Oitmaa
Various series expansions for a Heisenberg antiferromagnet model for SrCu$_2$(BO$_3$)$_2$
Zheng Weihong, C. J. Hamer, J. Oitmaa
Proceedings of the 35th Annual Australian/New Zealand Condensed Matter and Materials Meeting
K. Radhanpura, S. Hargreaves, R. A. Lewis +42
Local magnetic impurities in the 2D quantum Heisenberg antiferromagnet
V. N. Kotov, J. Oitmaa, O. Sushkov
The J1-J2 model: First order phase transition versus deconfinement of spinons
J. Sirker, Zheng Weihong, O. P. Sushkov +1
Phase Diagram of the Spin-Orbital model on the Square Lattice
E. Zasinas, O. P. Sushkov, J. Oitmaa
The Phase Diagram of the Shastry-Sutherland Antiferromagnet
Zheng Weihong, J. Oitmaa, C. J. Hamer
Magnetic Impurity in the two-dimensional Heisenberg Antiferromagnet
V. N. Kotov, J. Oitmaa, O. Sushkov
Ground state properties, excitation spectra and phase transitions in the $S=1/2$ and $S=3/2$ bilayer Heisenberg models on the honeycomb Lattice
J. Oitmaa, R. R. P. Singh
Zero Temperature Series Expansions for the Kondo Lattice Model
W. Zheng, J. Oitmaa
Series Expansions for Variable Electron Density
Zheng Weihong, C. J. Hamer, J. Oitmaa +1
Realization of a large J_2 quasi-2D spin-half Heisenberg system: Li2VOSiO4
H. Rosner, R. R. P. Singh, W. H. Zheng +3
Order and disorder in the triangular-lattice t-J-V model at 2/3 electron density
W. Zheng, J. Oitmaa, C. J. Hamer +1
Meta-Plaquette Expansion for the Triplet Excitation Spectrum in CaV$_4$O$_9$
Zheng Weihong, J. Oitmaa, C. J. Hamer
Series Expansions for the Massive Schwinger Model in Hamiltonian lattice theory
C. J. Hamer, Zheng Weihong, J. Oitmaa
Excitation spectrum and ground state properties of the S=1/2 Heisenberg ladder with staggered dimerization
V. N. Kotov, J. Oitmaa, Zheng Weihong
Convergent expansions for properties of the Heisenberg model for CaV$_4$O$_9$
M. P. Gelfand, Z. Weihong, R. R. P. Singh +2
Local impurities in 2D quantum antiferromagnets
V. N. Kotov, J. Oitmaa, O. Sushkov
Discerning Incompressible and Compressible Phases of Cold Atoms in Optical Lattices
V. W. Scarola, L. Pollet, J. Oitmaa +1
Disorder Line and Incommensurate Floating Phases in the Quantum Ising Model on an Anisotropic Triangular Lattice
V. I. Iglovikov, R. T. Scalettar, J. Oitmaa +1
Local Spin Correlations in Heisenberg Antiferromagnets
Zheng Weihong, J. Oitmaa
Are multiphase competition & order-by-disorder the keys to understanding Yb2Ti2O7?
L. D. C. Jaubert, Owen Benton, Jeffrey G. Rau +4
Series Expansions for three-dimensional QED
C. J. Hamer, J. Oitmaa, Zheng Weihong
Corrections to Pauling residual entropy and single tetrahedron based approximations for the pyrochlore lattice Ising antiferromagnet
Rajiv R. P. Singh, J. Oitmaa
Novel approach to description of spin liquid phases in low-dimensional quantum antiferromagnets
V. N. Kotov, O. Sushkov, Zheng Weihong +1
High temperature series expansion study of the Heisenberg antiferromagnet on the hyperkagome lattice: Comparison with Na$_4$Ir$_3$O$_8$
R. R. P. Singh, J. Oitmaa
Hard Core Bosons on the Triangular Lattice at Zero Temperature: A Series Expansion Study
J. Oitmaa, Weihong Zheng, D. Tompsett
Spin-S bilayer Heisenberg models: Mean-field arguments and numerical calculations
Martin P. Gelfand, Zheng Weihong, C. J. Hamer +1
Phase Diagram of the J1, J2, J3 Heisenberg Models on the Honeycomb Lattice: A Series Expansion Study
J. Oitmaa, R. R. P. Singh
Magnons and Excitation Continuum in XXZ triangular antiferromagnetic model: Application to $Ba_3CoSb_2O_9$
E. A. Ghioldi, A. Mezio, L. O. Manuel +3
Dimer Order with Striped Correlations in the J_1-J_2 Heisenberg Model
Rajiv R. P. Singh, Zheng Weihong, C. J. Hamer +1
A closer look at symmetry breaking in the collinear phase of the $J_1-J_2$ Heisenberg Model
R. R. P. Singh, W. Zheng, J. Oitmaa +2
Two-dimensional randomly-frustrated spin 1/2 Heisenberg model
J. Oitmaa, O. P. Sushkov
Ba8CoNb6O24: a spin-1/2 triangular-lattice Heisenberg antiferromagnet in the 2D limit
R. Rawl, L. Ge, H. Agrawal +11
Phase Transition and Thermal Order-by-Disorder in the Pyrochlore Quantum Antiferromagnet Er2Ti2O7: a High-Temperature Series Expansion Study
J. Oitmaa, R. R. P. Singh, A. G. R. Day +2
Curie and Neel Temperatures of Quantum Magnets
J. Oitmaa, Weihong Zheng
Universal Finite Temperature Properties of a Three Dimensional Quantum Antiferromagnet in the Vicinity of a Quantum Critical Point
J. Oitmaa, Y. Kulik, O. P. Sushkov
Studies of a 2-Chain Spin Ladder with Frustrating Second Neighbor Interactions
Zheng Weihong, V. Kotov, J. Oitmaa
Field Dependence of the Magnetization for the spin-ladder material Cu_2(C_5H_{12}N_2)_2Cl_4
Zheng Weihong, Rajiv R. P. Singh, J. Oitmaa
The Spin-1 Heisenberg Antiferromagnet: New Results from Series Expansions
J. Oitmaa, C. J. Hamer
Ferrimagnetism and compensation points in a decorated 3D Ising models
J. Oitmaa, W. Zheng
The Quantum Compass Model on the Square and Simple Cubic Lattices
J. Oitmaa, C. J. Hamer
Critical Behaviour of One-particle Spectral Weights in the Transverse Ising Model
C. J. Hamer, J. Oitmaa, Weihong Zheng +1
Further Series Studies of the Spin-1/2 Heisenberg Antiferromagnet at T=0: Magnon Dispersion and Structure Factors
Weihong Zheng, J. Oitmaa, C. J. Hamer
New quantum phase transitions in the two-dimensional J1-J2 model
O. P. Sushkov, J. Oitmaa, Zheng Weihong
Magnon and Hole Excitations in the Two-Dimensional Half-filled Hubbard Model
Weihong Zheng, Rajiv R. P. Singh, J. Oitmaa +2
Series study of the One-dimensional S-T Spin-Orbital Model
Weihong Zheng, J. Oitmaa
Studies of the t-J two-leg ladder via series expansions
J. Oitmaa, C. J. Hamer, Zheng Weihong
Ground state and finite temperature signatures of quantum phase transitions in the half-filled Hubbard model on a honeycomb lattice
Thereza Paiva, R. T. Scalettar, W. Zheng +2
Low-energy singlet and triplet excitations in the spin-liquid phase of the two-dimensional J1-J2 model
Valeri N. Kotov, J. Oitmaa, Oleg P. Sushkov +1
The Mixed Spin S=(1/2,1) XXZ Ferrimagnet at Zero Temperature
Weihong Zheng, J. Oitmaa
Finite temperature strong-coupling expansions for the Kondo lattice model
J. Oitmaa, W. Zheng
Critical dynamics of singlet and triplet excitations in strongly frustrated spin systems
O. P. Sushkov, J. Oitmaa, Zheng Weihong
Spin-waves in the $J_{1a}-J_{1b}-J_{2}$ orthorombic square-lattice Heisenberg models: Application to the iron pnictide materials
R. Applegate, J. Oitmaa, R. R. P. Singh
Numerical Studies of the two-leg Hubbard ladder
Zheng Weihong, J. Oitmaa, C. J. Hamer +1
Binding of a mobile hole by an impurity potential in the t-J model: parity breaking
O. P. Sushkov, J. Oitmaa
Studies of one- and two-hole states in the 2D t-J model via series expansions
C. J. Hamer, Zheng Weihong, J. Oitmaa