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Dopant pairing in a disordered magnetic spin ladder

K. Knakkergaard Nielsen

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Phys. Rev. Research 7, L012033 – Published 12 February, 2025

DOI: https://doi.org/10.1103/PhysRevResearch.7.L012033

Abstract

I demonstrate a pairing mechanism of dopants in a magnetic lattice, emerging from the underlying high-temperature disorder of the spins. The effect is demonstrated in a mixed-dimensional model, where dopants travel along a two-leg ladder, while the spins feature Ising interactions along the rungs and the legs of the ladder. The dynamics following the sudden immersion of two nearest neighbor dopants in an infinite temperature spin lattice shows that thermal spin disorder frustrates the relative motion of the dopants and enforces them to copropagate. The predictions are shown to be realistically testable in quantum simulation experiments.

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Outline

Information

Phys. Rev. Research 7, L012033– Published 12 February, 2025
  • Received 1 July 2024
  • Revised 14 January 2025
  • Accepted 21 January 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Open access publication funded by Max Planck Society.

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