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arXiv · 2111.08464

LT-scaling in depleted quantum spin ladders

Stanislaw Galeski·Kirill Yu. Povarov·Dominic Blosser·Severian Gvasaliya·Rafal Wawrzynczak·Jacques Ollivier·Johannes Gooth·Andrey Zheludev
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Abstract

Using a combination of neutron scattering, calorimetry, Quantum Monte Carlo (QMC) simulations and analytic results we uncover confinement effects in depleted, partially magnetized quantum spin ladders. We show that introducing non-magnetic impurities into magnetized spin ladders leads to the emergence of a new characteristic length L in the otherwise scale-free Tomonaga-Luttinger liquid (serving as the effective low-energy model). This results in universal LT scaling of staggered susceptibilities. Comparison of simulation results with experimental phase diagrams of prototypical spin ladder compounds DIMPY and BPCB yields excellent agreement.

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Stanislaw Galeski, Kirill Yu. Povarov, Dominic Blosser, Severian Gvasaliya, Rafal Wawrzynczak, Jacques Ollivier, Johannes Gooth, Andrey Zheludev. 2021-11-16. LT-scaling in depleted quantum spin ladders. https://doi.org/10.1103/physrevlett.128.237201

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