Exploring Spin‐Electric Coupling in an Electrically‐Controlled Rare‐Earth Molecular Qubit
Abstract
AbstractMagnetoelectric materials have attracted considerable interests due to their unique capability to facilitate reciprocal control between the charges and spins in matter. Based on electron paramagnetic resonance (EPR) involving modulated and pulsed electric fields, we have studied a Ce (III)‐based molecular qubit under electric control. We observed linear spin‐electric coupling (SEC) in the powder sample, which challenges the previous routine of spectral analysis and strength estimation for SEC. We determined the SEC parameter |Txyz| to be 2.04(16) × 10−10 m · V−1, two orders of magnitude larger than the effective value directly extracted from comparing the signal intensity, as validated by our electric‐field‐modulated (EFM) continuous‐wave EPR experiments and simulation program. The coherence time of this Ce(III) qubit is 24.1(13) µs at 5 K with dynamical decoupling and the electric control efficiency is approaching 0.1 Hz · m · V−1. Our work provides an insight into the EFM detection of the SEC effect of the uniaxial molecule and offers a reference for the coherent electric manipulation of rare‐earth molecular quantum systems.
Article Details
Authors (9)
Ji‐Min Song
Spin‐X Institute, School of Chemistry and Chemical Engineering, Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 511442 China
Jia‐Xin Chen
Spin‐X Institute, School of Chemistry and Chemical Engineering, Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials, State Key Laboratory of Luminescent Materials and Devices South China University of Technology Guangzhou 511442 China
Yu‐Shuang Zhang
Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemstry, LIFM, IGCME, GBRCE for Functional Molecular Engineering Sun Yat‐Sen University Guangzhou 510275 China
Qing‐Song Deng
State Key Laboratory for Physical Chemistry of Solid Surfaces and Department of Chemistry College of Chemistry and Chemical Engineering Xiamen University Xiamen P. R. China
Yi Xie
Song Gao
Ye‐Xin Wang
Quantum Science Center of Guangdong‐Hong Kong‐Macao Greater Bay Area Shenzhen‐Hong Kong International Science and Technology Park NO.3 Binglang Road Futian District, Shenzhen Guangdong 518045 China
Zheng Liu
Shang‐Da Jiang
Spin‐X Institute School of Chemistry and Chemical Engineering Guangdong‐Hong Kong‐Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials State Key Laboratory of Luminescent Materials and Devices Guangdong Basic Research Center of Excellence for Functional Molecular Engineering South China University of Technology Guangzhou China