34 citations · 139 across the 8 of their papers we have counts for
8 papers
Doped two orbital chains with strong Hund's rule couplings - ferromagnetism, spin gap, singlet and triplet pairings
Beat Ammon, Masatoshi Imada
Different models for doping of two-orbital chains with mobile fermions and strong, ferromagnetic (FM) Hund's rule couplings stabilizing the S=1 spins are investigated by de…
Effect of the Orbital Level Difference in Doped Spin-1 Chains
Beat Ammon, Masatoshi Imada
Doping of a two-orbital chain with mobile S=1/2 Fermions and strong Hund's rule couplings stabilizing the S=1 spins strongly depends on the presence of a level difference among the…
Monte Carlo Study of the Separation of Energy Scales in Quantum Spin 1/2 Chains with Bond Disorder
Beat Ammon, Manfred Sigrist
One-dimensional Heisenberg spin 1/2 chains with random ferro- and antiferromagnetic bonds are realized in systems such as . We have investigated numerical…
Thermodynamics of the t-J Ladder: A Stable Finite Temperature Density Matrix Renormalization Group Calculation
Beat Ammon, Matthias Troyer, T. M. Rice +1
Accurate numerical simulations of a doped t-J model on a two-leg ladder are presented for the particle number, chemical potential, magnetic susceptibility and entropy in the limit…
Thermodynamics of Random Ferromagnetic Antiferromagnetic Spin-1/2 Chains
Beat Frischmuth, Manfred Sigrist, Beat Ammon +1
Using the quantum Monte Carlo Loop algorithm, we calculate the temperature dependence of the uniform susceptibility, the specific heat, the correlation length, the generalized stag…
Thermodynamic properties of the one-dimensional Kondo insulators studied by the density matrix renormalization group method
N. Shibata, B. Ammon, M. Troyer +2
Thermodynamic properties of the one-dimensional Kondo lattice model at half-filling are studied by the density matrix renormalization group method applied to the quantum transfer m…