1 research outputs found
Thermodynamics of quantum Heisenberg spin chains
Thermodynamic properties of the quantum Heisenberg spin chains with S = 1/2,
1, and 3/2 are investigated using the transfer-matrix renormalization-group
method. The temperature dependence of the magnetization, susceptibility,
specific heat, spin-spin correlation length, and several other physical
quantities in a zero or finite applied field are calculated and compared. Our
data agree well with the Bethe ansatz, exact diagonalization, and quantum Monte
Carlo results and provide further insight into the quantum effects in the
antiferromagnetic Heisenberg spin chains.Comment: 9 pages, 10 figure