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Strong Coupling of Microwave Photons to Antiferromagnetic Fluctuations in an Organic Magnet

Mergenthaler, Matthias; Liu, Junjie; Le Roy, Jennifer J.; Ares, Natalia; Thompson, Amber L.; Bogani, Lapo; Luis, Fernando; Blundell, Stephen J.; Lancaster, Tom; Ardavan, Arzhang; Briggs, G. Andrew D.; Leek, Peter J.; Laird, Edward A.

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Authors

Matthias Mergenthaler

Junjie Liu

Jennifer J. Le Roy

Natalia Ares

Amber L. Thompson

Lapo Bogani

Fernando Luis

Stephen J. Blundell

Arzhang Ardavan

G. Andrew D. Briggs

Peter J. Leek

Edward A. Laird



Abstract

Coupling between a crystal of di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium radicals and a superconducting microwave resonator is investigated in a circuit quantum electrodynamics (circuit QED) architecture. The crystal exhibits paramagnetic behavior above 4 K, with antiferromagnetic correlations appearing below this temperature, and we demonstrate strong coupling at base temperature. The magnetic resonance acquires a field angle dependence as the crystal is cooled down, indicating anisotropy of the exchange interactions. These results show that multispin modes in organic crystals are suitable for circuit QED, offering a platform for their coherent manipulation. They also utilize the circuit QED architecture as a way to probe spin correlations at low temperature.

Citation

Mergenthaler, M., Liu, J., Le Roy, J. J., Ares, N., Thompson, A. L., Bogani, L., …Laird, E. A. (2017). Strong Coupling of Microwave Photons to Antiferromagnetic Fluctuations in an Organic Magnet. Physical Review Letters, 119(14), Article 147701. https://doi.org/10.1103/physrevlett.119.147701

Journal Article Type Article
Acceptance Date Aug 7, 2017
Online Publication Date Oct 2, 2017
Publication Date Oct 2, 2017
Deposit Date Oct 3, 2017
Publicly Available Date Mar 28, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 119
Issue 14
Article Number 147701
DOI https://doi.org/10.1103/physrevlett.119.147701
Related Public URLs https://arxiv.org/abs/1703.06202

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Copyright Statement
Reprinted with permission from the American Physical Society: Physical Review Letters 119, 147701 © 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.





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