129 citations · 767 across the 26 of their papers we have counts for
17 papers · 1 filter
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…
Switching Mechanism in Ferromagnetic Nanorings
Wen Zhang, Stephan Haas
Ferromagnetic rings exhibit many novel physical phenomena with promise for potential applications. Here, we focus on switching processes which are fundamental properties of magneti…
Fidelity in topological quantum phases of matter
Silvano Garnerone, Damian Abasto, Stephan Haas +1
Quantum phase transitions that take place between two distinct topological phases remain an unexplored area for the applicability of the fidelity approach. Here, we apply this meth…
Effects of Strong Correlations and Disorder in d-Wave Superconductors
Marcos Rigol, B. Sriram Shastry, Stephan Haas
We use exact diagonalization techniques to study the interplay between strong correlations, superconductivity, and disorder in a model system. We study an extension of the t-J mode…
Subarea law of entanglement in nodal fermionic systems
Letian Ding, Noah Bray-Ali, Rong Yu +1
We investigate the subarea law scaling properties of the block entropy in bipartite fermionic systems which do not have a finite Fermi surface. It is found that in gapped regimes t…
Scaling Analysis and Application: Phase Diagram of Magnetic Nanorings and Elliptical Nanoparticles
Wen Zhang, Rohit Singh, Noah Bray-Ali +1
The magnetic properties of single-domain nanoparticles with different geometric shapes, crystalline anisotropies and lattice structures are investigated. A recently proposed scalin…