Susceptibility and low-temperature thermodynamics of spin-½ Heisenberg ladders
Susceptibility and low-temperature thermodynamics of spin-½ Heisenberg ladders
The temperature dependence of the uniform susceptibility and the ground state energy of antiferromagnetic Heisenberg ladders with up to 6 legs has been calculated, using the Monte Carlo loop algorithm. The susceptibilities of even-leg-ladders show spin gaps while these of odd-leg-ladders remain finite in the zero temperature limit. For small …