Homochiral Toroidal Spin State in Dy(III)-based Single-Molecule Toroics
Abstract
Single-molecule toroics (SMTs), materials that combine spin and chirality at the molecule level, are promising candidates for applications in data storage, chiral spintronics and magnetoelectric devices. Over the past two decades, significant progress has been made in the design of toroidal spin states via ligand design and coordination chemistry strategies. However, achieving homochiral magnetic vortex configurations across both molecular and unit-cell scales-a key prerequisite to induce the toroidal polarization using a homogeneous magnetic field-remains challenging. Here, we report enantiopure chiral dysprosium triangles in which introduction of structural chirality induces spin homochirality. µ-SQUID magnetometry and ab initio calculations evidence a non-coplanar spin texture that exhibits a toroidal ground state at low temperature. Furthermore, magneto-chiral dichroism (MChD) spectroscopy, a technique sensitive to both chirality and magnetization, reveals unusual behaviours below 4.5 K, the temperature at which the coupling between Dy(III) ions favours the generation of a toroidal spin state.
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BibTeX
@article{zhu2026homochiral,
title = {{Homochiral Toroidal Spin State in Dy(III)-based Single-Molecule Toroics}},
author = {Zhenhua Zhu and Xu Ying and Langit Cahya Adi and Chen Zhao and Elizabeth Jia Mei Chew and Liviu Ungur and Sagar Paul and Wolfgang Wernsdorfer and Cyrille Train and Geert Rikken and Matteo Atzori and Jinkui Tang},
journal = {Nature Chemistry-},
year = {2026},
month = sep,
doi = {10.1038/s41557-026-02070-4},
url = {https://hal.science/hal-05526668v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Homochiral Toroidal Spin State in Dy(III)-based Single-Molecule Toroics
AU - Zhenhua Zhu
AU - Xu Ying
AU - Langit Cahya Adi
AU - Chen Zhao
AU - Elizabeth Jia Mei Chew
AU - Liviu Ungur
AU - Sagar Paul
AU - Wolfgang Wernsdorfer
AU - Cyrille Train
AU - Geert Rikken
AU - Matteo Atzori
AU - Jinkui Tang
PY - 2026
DA - 2026/09/30
JO - Nature Chemistry-
DO - 10.1038/s41557-026-02070-4
UR - https://hal.science/hal-05526668v1
AB - Single-molecule toroics (SMTs), materials that combine spin and chirality at the molecule level, are promising candidates for applications in data storage, chiral spintronics and magnetoelectric devices. Over the past two decades, significant progress has been made in the design of toroidal spin states via ligand design and coordination chemistry strategies. However, achieving homochiral magnetic vortex configurations across both molecular and unit-cell scales-a key prerequisite to induce the toroidal polarization using a homogeneous magnetic field-remains challenging. Here, we report enantiopure chiral dysprosium triangles in which introduction of structural chirality induces spin homochirality. µ-SQUID magnetometry and ab initio calculations evidence a non-coplanar spin texture that exhibits a toroidal ground state at low temperature. Furthermore, magneto-chiral dichroism (MChD) spectroscopy, a technique sensitive to both chirality and magnetization, reveals unusual behaviours below 4.5 K, the temperature at which the coupling between Dy(III) ions favours the generation of a toroidal spin state.
SN - 1755-4330
SN - 1755-4349
ER -