On-Surface Design of a 2D Cobalt-Organic Network Preserving Large Orbital Magnetic Moment. Martín-Fuentes, C., Parreiras, S. O., Urgel, J. I., Rubio-Giménez, V., Muñiz Cano, B., Moreno, D., Lauwaet, K., Valvidares, M., Valbuena, M. A., Gargiani, P., Kuch, W., Camarero, J., Gallego, J. M., Miranda, R., Martínez, J. I., Martí-Gastaldo, C., & Écija, D. Journal of the American Chemical Society, 144(35):16034–16041, American Chemical Society, September, 2022. ![On-Surface Design of a 2D Cobalt-Organic Network Preserving Large Orbital Magnetic Moment [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex The design of antiferromagnetic nanomaterials preserving large orbital magnetic moments is important to protect their functionalities against magnetic perturbations. Here, we exploit an archetype H6HOTP species for conductive metal–organic frameworks to design a Co-HOTP one-atom-thick metal–organic architecture on a Au(111) surface. Our multidisciplinary scanning probe microscopy, X-ray absorption spectroscopy, X-ray linear dichroism, and X-ray magnetic circular dichroism study, combined with density functional theory simulations, reveals the formation of a unique network design based on threefold Co+2 coordination with deprotonated ligands, which displays a large orbital magnetic moment with an orbital to effective spin moment ratio of 0.8, an in-plane easy axis of magnetization, and large magnetic anisotropy. Our simulations suggest an antiferromagnetic ground state, which is compatible with the experimental findings. Such a Co-HOTP metal–organic network exemplifies how on-surface chemistry can enable the design of field-robust antiferromagnetic materials.
@article{martin-fuentes_-surface_2022,
title = {On-{Surface} {Design} of a {2D} {Cobalt}-{Organic} {Network} {Preserving} {Large} {Orbital} {Magnetic} {Moment}},
volume = {144},
issn = {0002-7863},
url = {https://doi.org/10.1021/jacs.2c05894},
doi = {10.1021/jacs.2c05894},
abstract = {The design of antiferromagnetic nanomaterials preserving large orbital magnetic moments is important to protect their functionalities against magnetic perturbations. Here, we exploit an archetype H6HOTP species for conductive metal–organic frameworks to design a Co-HOTP one-atom-thick metal–organic architecture on a Au(111) surface. Our multidisciplinary scanning probe microscopy, X-ray absorption spectroscopy, X-ray linear dichroism, and X-ray magnetic circular dichroism study, combined with density functional theory simulations, reveals the formation of a unique network design based on threefold Co+2 coordination with deprotonated ligands, which displays a large orbital magnetic moment with an orbital to effective spin moment ratio of 0.8, an in-plane easy axis of magnetization, and large magnetic anisotropy. Our simulations suggest an antiferromagnetic ground state, which is compatible with the experimental findings. Such a Co-HOTP metal–organic network exemplifies how on-surface chemistry can enable the design of field-robust antiferromagnetic materials.},
number = {35},
urldate = {2023-05-25},
journal = {Journal of the American Chemical Society},
publisher = {American Chemical Society},
author = {Martín-Fuentes, Cristina and Parreiras, Sofia O. and Urgel, José I. and Rubio-Giménez, Víctor and Muñiz Cano, Beatriz and Moreno, Daniel and Lauwaet, Koen and Valvidares, Manuel and Valbuena, Miguel A. and Gargiani, Pierluigi and Kuch, Wolfgang and Camarero, Julio and Gallego, José M. and Miranda, Rodolfo and Martínez, José I. and Martí-Gastaldo, Carlos and Écija, David},
month = sep,
year = {2022},
pages = {16034--16041},
}
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Here, we exploit an archetype H6HOTP species for conductive metal–organic frameworks to design a Co-HOTP one-atom-thick metal–organic architecture on a Au(111) surface. Our multidisciplinary scanning probe microscopy, X-ray absorption spectroscopy, X-ray linear dichroism, and X-ray magnetic circular dichroism study, combined with density functional theory simulations, reveals the formation of a unique network design based on threefold Co+2 coordination with deprotonated ligands, which displays a large orbital magnetic moment with an orbital to effective spin moment ratio of 0.8, an in-plane easy axis of magnetization, and large magnetic anisotropy. Our simulations suggest an antiferromagnetic ground state, which is compatible with the experimental findings. 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