Controlling Electron Spin Decoherence in Nd-based Complexes via Symmetry Selection
Jing Li,
Lei Yin,
Shi-Jie Xiong,
Xing-Long Wu,
Fei Yu,
Zhong-Wen Ouyang,
Zheng-Cai Xia,
Yi-Quan Zhang,
Johan van Tol,
You Song,
Zhenxing Wang
Affiliations
Jing Li
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
Lei Yin
Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
Shi-Jie Xiong
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
Xing-Long Wu
National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
Fei Yu
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China
Zhong-Wen Ouyang
Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
Zheng-Cai Xia
Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China
Yi-Quan Zhang
Jiangsu Key Laboratory for NSLSCS, School of Physical Science and Technology, Nanjing Normal University, Nanjing 210023, P. R. China; Corresponding author
Johan van Tol
National High Magnetic Field Laboratory, Florida State University, Tallahassee, FL 32310, USA; Corresponding author
You Song
State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, P. R. China; Corresponding author
Zhenxing Wang
Wuhan National High Magnetic Field Center & School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China; Corresponding author
Summary: 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. : Materials Property; Molecules; Quantum Chemical Calculations Subject Areas: Materials Property, Molecules, Quantum Chemical Calculations
