Remote spin control in Haldane spin chains
We consider the remote manipulation of the quantum state of the edge emergent spins of Haldane spin chains using a weak local perturbation on the opposite edge. We derive an effective four-level model that correctly captures the response of the local magnetization to local perturbations and we use it to show that applying a small local field on one edge of the chain induces a strong variation of the magnetization on the opposite edge. Using a Landau-Zener protocol, we show how local control of the field on one edge of the chain, implemented, for instance, with a spin-polarized scanning tunneling microscope tip, can adiabatically switch the magnetization direction on the other side of the chain.
Authors
- Y. del Castillo (ORCID: https://orcid.org/0000-0002-3139-9873)
- J. Fernández‐Rossier (ORCID: https://orcid.org/0000-0003-2297-0289)
- Alejandro Ferrón (ORCID: https://orcid.org/0000-0001-8106-4193)
Institutions
- National University of the Northeast (AR)
- National Research Council (RO)
- International Iberian Nanotechnology Laboratory (PT)
- University of Minho (PT)
Publication Details
- Journal
- SciPost Physics Core
- Published
- 2026-04-16
- DOI
- https://doi.org/10.21468/scipostphyscore.9.2.024
- Primary Topic
- Quantum and electron transport phenomena
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Universidad de Alicante
- Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
- Consejo Nacional de Investigaciones Científicas y Técnicas
- Generalitat Valenciana
- Ministerio de Ciencia e Innovación
- Universidad Nacional del Nordeste
- Fundação para a Ciência e a Tecnologia
- Agencia Estatal de Investigación