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 (Universidad de Zaragoza) ; Blundell, Stephen J. ; Lancaster, Tom ; Ardavan, Arzhang ; Briggs, G. Andrew D. ; Leek, Peter J. ; Laird, Edward A.

Resumen: 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.

Idioma: Inglés

DOI: 10.1103/PhysRevLett.119.147701

Año: 2017

Publicado en: Physical Review Letters 119, 14 (2017), 147701 [6 pp]
ISSN: 0031-9007

Factor impacto JCR: 8.839 (2017)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 78 = 0.077 (2017) - Q1 - T1

Factor impacto SCIMAGO: 3.622 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/338258/EU/Optical Quantum Control of Magnetic Molecules/OptoQMol
Financiación: info:eu-repo/grantAgreement/ES/MINECO-FEDER/MAT2015-68204-R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)