152 citations · 923 across the 20 of their papers we have counts for
25 papers · 1 filter
Phase diagram of hard-core bosons on clean and disordered 2-leg ladders: Mott insulator - Luttinger liquid - Bose glass
François Crépin, Nicolas Laflorencie, Guillaume Roux +1
One dimensional free-fermions and hard-core bosons are often considered to be equivalent. Indeed, when restricted to nearest-neighbor hopping on a chain the particles cannot exchan…
Entanglement Entropy of the Two-Dimensional Heisenberg Antiferromagnet
H. Francis Song, Nicolas Laflorencie, Stephan Rachel +1
We compute the von Neumann and generalized Rényi entanglement entropies in the ground-state of the spin-1/2 antiferromagnetic Heisenberg model on the square lattice using the modif…
Impurity-induced magnetic order in low dimensional spin gapped materials
J. Bobroff, N. Laflorencie, L. K. Alexander +3
We have studied the effect of non-magnetic Zn impurities in the coupled spin-ladder Bi(Cu1xZnx)2PO6 using 31P NMR, muSR and Quantum Monte Carlo simulations. Our results show that t…
Theory of the field-induced BEC in the frustrated spin-1/2 dimer compound BaCuSi2O6
Nicolas Laflorencie, Frederic Mila
Building on recent neutron and NMR experiments, we investigate the field-induced exotic criticality observed in the frustrated spin-1/2 dimer compound BaCuSi2O6 using a frustrated…
NMR Response in quasi one-dimensional Spin-1/2 Antiferromagnets
J. Sirker, N. Laflorencie
Non-magnetic impurities break a quantum spin chain into finite segments and induce Friedel-like oscillations in the local susceptibility near the edges. The signature of these osci…
Mechanisms for Spin-Supersolidity in S=1/2 Spin-Dimer Antiferromagnets
J. -D. Picon, A. F. Albuquerque, K. P. Schmidt +3
Using perturbative expansions and the contractor renormalization (CORE) algorithm, we obtain effective hard-core bosonic Hamiltonians describing the low-energy physics of s…