163 citations · 3k across the 133 of their papers we have counts for
9 papers · 1 filter
Phase Diagram of Magnetization Reversal Processes in Nanorings
Wen Zhang, Stephan Haas
We investigate magnetization reversal processes of magnetic nanorings. Using a recently developed efficient cartesian coordinates fast multipole method, magnetization switching pha…
Fractal dimension and threshold properties in a spatially correlated percolation model
Hongting Yang, Wen Zhang, Noah Bray-Ali +1
We consider the effects of spatial correlations in a two-dimensional site percolation model. By generalizing the Newman-Ziff Monte Carlo algorithm to include spatial correlations,…
Fidelity and superconductivity in two-dimensional t-J models
Marcos Rigol, B. Sriram Shastry, Stephan Haas
We compute the ground-state fidelity and various correlations to gauge the competition between different orders in two-dimensional t-J-type models. Using exact numerical diagonaliz…
Revealing Novel Quantum Phases in Quantum Antiferromagnets on Random Lattices
Rong Yu, Stephan Haas, Tommaso Roscilde
Quantum magnets represent an ideal playground for the controlled realization of novel quantum phases and of quantum phase transitions. The Hamiltonian of the system can be indeed m…
Topological order in paired states of fermions in two-dimensions with breaking of parity and time-reversal symmetries
N. Bray-Ali, L. Ding, S. Haas
We numerically evaluate the entanglement spectrum (singular value decomposition of the wavefunction) of paired states of fermions in two dimensions that break parity and time-rever…
Plasmonic Excitations in Tight-Binding Nanostructures
Rodrigo A. Muniz, Stephan Haas, A. F. J. Levi +1
We explore the collective electromagnetic response in atomic clusters of various sizes and geometries. Our aim is to understand, and hence to control, their dielectric response, ba…