https://doi.org/10.1140/epjb/s10051-024-00669-5
Topical Review - Solid State and Materials
Thermodynamic properties of disordered quantum spin ladders
1
Department of Physics, Dokuz Eylül University, Izmir, Turkey
2
School of Mathematics, Statistics and Actuarial Science, University of Essex, Colchester, UK
Received:
4
December
2023
Accepted:
8
March
2024
Published online:
28
March
2024
In this paper, we study the thermodynamic properties of spin-1/2 antiferromagnetic Heisenberg ladders by means of the stochastic series expansion quantum Monte Carlo technique. This includes the thermal properties of the specific heat, uniform and staggered susceptibilities, spin gap, and structure factor. Our numerical simulations are probed over a large ensemble of random realizations in a wide range of disorder strengths r, from the clean (
) case up to the diluted (
) limit, and for selected choices of number of legs 
per site. Our results show some interesting phenomena, like the presence of crossing points in the temperature plane for both the specific heat and uniform susceptibility curves which appear to be universal in r, as well as a variable dependence of the spin gap in the amount of disorder upon increasing .
© The Author(s) 2024
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