Remote spin control in Haldane spin chains, by Yelko del Castillo, Alejandro Ferrón, Joaquín Fernández-Rossier
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SciPost Physics Core Home Authoring Refereeing Submit a manuscript About Remote spin control in Haldane spin chains Yelko del Castillo, Alejandro Ferrón, Joaquín Fernández-Rossier SciPost Phys. Core 9, 024 (2026) · published 16 April 2026 doi: 10.21468/SciPostPhysCore.9.2.024 pdf BiBTeX RIS Submissions/Reports Abstract 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. × TY - JOURPB - SciPost FoundationDO - 10.21468/SciPostPhysCore.9.2.024TI - Remote spin control in Haldane spin chainsPY - 2026/04/16UR - https://scipost.org/SciPostPhysCore.9.2.024JF - SciPost Physics CoreJA - SciPost Phys. CoreVL - 9IS - 2SP - 024A1 - del Castillo, YelkoAU - Ferrón, AlejandroAU - Fernández-Rossier, JoaquínAB - 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.ER - × @Article{10.21468/SciPostPhysCore.9.2.024, title={{Remote spin control in Haldane spin chains}}, author={Yelko del Castillo and Alejandro Ferrón and Joaquín Fernández-Rossier}, journal={SciPost Phys. Core}, volume={9}, pages={024}, year={2026}, publisher={SciPost}, doi={10.21468/SciPostPhysCore.9.2.024}, url={https://scipost.org/10.21468/SciPostPhysCore.9.2.024},} Disclosure of Generative AI use The author(s) disclose that the following generative AI tools have been used in the preparation of this publication Generative AI tools (ChatGPT, OpenAI GPT-5, September 2025) were used to assist with grammar correction, language polishing, and minor style improvements. All scientific content, analysis, and conclusions are the authors’ own.
Supplementary Information External links to supplemental resources; opens in a new tab. Data repository Ontology / Topics See full Ontology or Topics database. Quantum spin chains Authors / Affiliations: mappings to Contributors and Organizations See all Organizations. 1 2 Yelko del Castillo, 3 4 Alejandro Ferrón, 1 Joaquín Fernández-Rossier 1 Laboratório Ibérico Internacional de Nanotecnologia / International Iberian Nanotechnology Laboratory [INL] 2 Universidade do Minho / University of Minho 3 Consejo Nacional de Investigaciones Científicas y Técnicas / National Scientific and Technical Research Council [CONICET] 4 Universidad Nacional del Nordeste / National University of the Northeast [UNNE] Funders for the research work leading to this publication Agencia Estatal de Investigación Consejo Nacional de Investigaciones Científicas y Técnicas / National Scientific and Technical Research Council [CONICET] Fundação para a Ciência e a Tecnologia (through Organization: Fundação para a Ciência e Tecnologia [FCT]) Generalitat Valenciana Universidad Nacional del Nordeste