284 citations · 7.7k across the 190 of their papers we have counts for
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Elementary excitations of magnetically ordered systems with orbital degeneracy
A. Joshi, M. Ma, F. Mila +2
The Holstein-Primakoff transformation is generalized to develop a quantum flavor wave theory for spin systems with orbital degeneracy. Elementary excitations consist of spin, orbit…
Residual entropy and spin gap in a one-dimensional analog of the pyrochlore antiferromagnet
M. Mambrini, J. Trebosc, F. Mila
We show that the low-energy sector of the S=1/2, antiferromagnetic Heisenberg model on a one-dimensional lattice of coupled tetrahedra consists of 2^N replica of the spectrum of th…
Elementary excitations of the symmetric spin-orbital model: The XY limit
F. Mila, B. Frischmuth, A. Deppeler +1
The elementary excitations of the 1D, symmetric, spin-orbital model are investigated by studying two anisotropic versions of the model, the pure XY and the dimerized XXZ case, with…
Thermodynamics of the one-dimensional SU(4) symmetric spin-orbital model
Beat Frischmuth, Frederic Mila, Matthias Troyer
The ground state properties and the thermodynamics of the one-dimensional SU(4) symmetric spin system with orbital degeneracy are investigated using the quantum Monte Carlo loop al…
Low-energy sector of the S=1/2 Kagome antiferromagnet
Frederic Mila
Starting from a modified version of the the S=1/2 Kagome antiferromagnet to emphasize the role of elementary triangles, an effective Hamiltonian involving spin and chirality variab…
Ladders in a magnetic field: a strong coupling approach
Frederic Mila
We show that non-frustrated and frustrated ladders in a magnetic field can be systematically mapped onto an XXZ Heisenberg model in a longitudinal magnetic field in the limit where…