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Controlling Electron Spin Decoherence in Nd-based Complexes via Symmetry Selection.

ABSTRACT: Long decoherence time is a key consideration for molecular magnets in the application of the quantum computation. Although previous studies have shown that the local symmetry of spin carriers plays a crucial part in the spin-lattice relaxation process, its role in the spin decoherence is still unclear. Herein, two nine-coordinated capped square antiprism neodymium moieties [Nd(CO3)4H2O]5- with slightly different local symmetries, C1 versus C4 (1 and 2), are reported, which feature in the easy-plane magnetic anisotropy as shown by the high-frequency electron paramagnetic resonance (HF-EPR) studies. Detailed analysis of the relaxation time suggests that the phonon bottleneck effect is essential to the magnetic relaxation in the crystalline samples of 1 and 2. The 240 GHz Pulsed EPR studies show that the higher symmetry results in longer decoherence times, which is supported by the first principle calculations.

SUBMITTER: Li J

PROVIDER: S-EPMC7063258 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Controlling Electron Spin Decoherence in Nd-based Complexes via Symmetry Selection.

Li Jing J Yin Lei L Xiong Shi-Jie SJ Wu Xing-Long XL Yu Fei F Ouyang Zhong-Wen ZW Xia Zheng-Cai ZC Zhang Yi-Quan YQ van Tol Johan J Song You Y Wang Zhenxing Z

iScience 20200220 3

Long decoherence time is a key consideration for molecular magnets in the application of the quantum computation. Although previous studies have shown that the local symmetry of spin carriers plays a crucial part in the spin-lattice relaxation process, its role in the spin decoherence is still unclear. Herein, two nine-coordinated capped square antiprism neodymium moieties [Nd(CO3)4H2O]5- with slightly different local symmetries, C1 versus C ...[more]

PMID: 32146324

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