74 citations · 364 across the 11 of their papers we have counts for
4 papers · 1 filter
Magnetic and quantum disordered phases in triangular-lattice Heisenberg antiferromagnets
L. O. Manuel, H. A. Ceccatto
We study, within the Schwinger-boson approach, the ground-state structure of two Heisenberg antiferromagnets on the triangular lattice: the J1-J2 model, which includes a next-neare…
The Heisenberg model on the 1/5-depleted square lattice and the CaV4O9 compound
L. O. Manuel, M. I. Micheletti, A. E. Trumper +1
We investigate the ground state structure of the Heisenberg model on the 1/5-depleted square lattice for arbitrary values of the first- and second-neighbor exchange couplings. By u…
Rotational invariance and order-parameter stiffness in frustrated quantum spin systems
L. O. Manuel, A. E. Trumper, H. A. Ceccatto
We compute, within the Schwinger-boson scheme, the Gaussian-fluctuation corrections to the order-parameter stiffness of two frustrated quantum spin systems: the triangular-lattice…
Schwinger-boson approach to quantum spin systems: Gaussian fluctuactions in the "natural" gauge
A. E. Trumper, L. O. Manuel, C. J. Gazza +1
We compute the Gaussian-fluctuation corrections to the saddle-point Schwinger-boson results using collective coordinate methods. Concrete application to investigate the frustrated…