Susceptibility and Low Temperature Thermodynamics of Spin-1/2 Heisenberg Ladders

Details Susceptibility and Low Temperature Thermodynamics of Spin-1/2 Heisenberg Ladders Susceptibility and Low Temperature Thermodynamics of Spin-1/2 Heisenberg Ladders

1996-01-08

arxiv.org/abs/cond-mat/9601025v1

Phys. Rev. B 54, 0R3714 (1996)

Physics

Condensed Matter

4 pages and 3 figures

Scientific paper

10.1103/PhysRevB.54.R3714

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 ratios of intra- to inter-leg couplings, odd-leg-ladders can be mapped at low temperatures to single chains. For equal couplings, the logarithmic corrections at low temperatures increase markedly with the number of legs.

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