Chiral-Induced Spin-Polarized Molecular Switching in a Magneto-Controlled 2D System using Electrical Readouts
Lei, Yiming (Universitat Autònoma de Barcelona. Departament de Química)
Campos-Lendínez, Ángel (Universitat Autònoma de Barcelona. Departament de Química)
Spasojevic, Irena (Universitat Autònoma de Barcelona. Departament de Física)
Sala Román, Xavier (Universitat Autònoma de Barcelona. Departament de Química)
García-Antón, Jordi (Universitat Autònoma de Barcelona. Departament de Química)
Sort, Jordi (Institut Català de Nanociència i Nanotecnologia)
Muñoz, Jose (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2026
Abstract:	Molecular switches that exhibit bistable electron spins under ambient conditions have attracted growing interest due to their potential applications in quantum technologies, enabling exploitation of the chiral-induced spin selectivity (CISS) phenomenon on electron transfer processes. However, conferring chirality to 2D materials remains a major challenge in Materials Chemistry. Herein, we report the molecular engineering of a chiral spin-filtering 2D material ―viz. 2D germanane (2D─GeH)―functionalized by covalent anchoring of chiral cysteine molecules via nucleophilic substitution. By interfacing the resulting chiral 2D material with a ferromagnetic electrode, we demonstrate the dynamic control of spin polarization by manipulating the external magnetic field, leading to two well-defined and electrically distinguishable quantum states. Additionally, the spin polarization direction can be tailored on-demand via enantiomeric configuration of the chiral ligand, promoting spin-dependent electron transport. These findings establish a platform for fine-tuning the spin polarization in chiral 2D materials, offering new opportunities for writing, erasing, and reading unconventional spin-selective molecular switches, and thereby paving the way for advances in quantum information processing and spintronics applications.
Grants:	Ministerio de Ciencia e Innovación RYC2021-033820-I European Commission 101054687 Generalitat de Catalunya 2021/SGR-00651 Generalitat de Catalunya 2024/PROD-00046 Generalitat de Catalunya 2023/CLIMA-00011 Agencia Estatal de Investigación PID2023-146787OB-I00 Ministerio de Ciencia, Innovación y Universidades PID2024-156385OB-I00
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Small (Weinheim), March 2026, ISSN 1613-6829

DOI: 10.1002/smll.202513626

9 p, 1.6 MB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles