Electron spin-lattice relaxation of the Zeeman and interaction systems in CuCs2(SO4)2·6H2O

Vroomen, A.C. De; Lijphart, E.E.; Prins, D.Y.H.; Marks, Jonathan; Poulis, N.J.

doi:10.1016/0031-8914(72)90070-5

Cited by 23 publications

(19 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The magnetic field dependence of τ for 1 is reproduced by the Brons–van Vleck model , with a slight modification (eq ): The first term is related to the low-field region where τ increases due to the suppression of the internal fields, whereas the second term accounts for the direct relaxation mechanism. In the standard Brons–van Vleck model, the direct contribution to the spin–lattice relaxation rate in Kramers systems depends on the field as τ –1 ∝ cB 4 .…”

Section: Resultssupporting

confidence: 87%

See 1 more Smart Citation

Scaling Up Electronic Spin Qubits into a Three-Dimensional Metal–Organic Framework

et al. 2018

View full text Add to dashboard Cite

Practical implementation of highly coherent molecular spin qubits for challenging technological applications, such as quantum information processing or quantum sensing, requires precise organization of electronic qubit molecular components into extended frameworks. Realization of spatial control over qubit-qubit distances can be achieved by coordination chemistry approaches through an appropriate choice of the molecular building blocks. However, translating single qubit molecular building units into extended arrays does not guarantee a priori retention of long quantum coherence and spin-lattice relaxation times due to the introduced modifications over qubit-qubit reciprocal distances and molecular crystal lattice phonon structure. In this work, we report the preparation of a three-dimensional (3D) metal-organic framework (MOF) based on vanadyl qubits, [VO(TCPP-Zn-bpy)] (TCPP = tetracarboxylphenylporphyrinate; bpy = 4,4'-bipyridyl) (1), and the investigation of how such structural modifications influence qubits' performances. This has been done through a multitechnique approach where the structure and properties of a representative molecular building block of formula [VO(TPP)] (TPP = tetraphenylporphyrinate) (2) have been compared with those of the 3D MOF 1. Pulsed electron paramagnetic resonance measurements on magnetically diluted samples in titanyl isostructural analogues revealed that coherence times are retained almost unchanged for 1 with respect to 2 up to room temperature, while the temperature dependence of the spin-lattice relaxation time revealed insights into the role of low-energy vibrations, detected through terahertz spectroscopy, on the spin dynamics.

show abstract

Section: Resultssupporting

confidence: 87%

“…The magnetic field dependence of τ for 1 is reproduced by the Brons−van Vleck model 45,46 with a slight modification (eq 1):…”

Section: Journal Of the American Chemical Societymentioning

confidence: 99%

Scaling Up Electronic Spin Qubits into a Three-Dimensional Metal–Organic Framework

et al. 2018

View full text Add to dashboard Cite

show abstract

“…5 and Table S18 †. The large value of c in 3 suggests a large contribution by the direct process in facilitating spin relaxation, corroborating our findings from pulse-EPR that the MOF lattice may possess more phonon modes with energies that greatly decrease T 1 12,13,70. This is additionally supported by the occurrence of the maximum τ at lower fields relative to previously investigated molecular species, suggesting a greater density of low energy phonons that mediate spin relaxation via the direct process 12,13,49.…”

Section: Resultssupporting

confidence: 79%

A concentrated array of copper porphyrin candidate qubits

Yu¹,

Krzyaniak

Fataftah³

et al. 2019

Chem. Sci.

128

View full text Add to dashboard Cite

show abstract

“…At low magnetic elds, s increases with increasing magnetic elds until $0.75 T, beyond which it begins to drastically decrease with increasing magnetic elds. We modelled this data with the Brons-van Vleck model 44 (eqn (2)) (see Table S23 † for t parameters):…”

Section: Resultsmentioning

confidence: 99%