Author(s): Zhang, X (Zhang, Xu); Zhu, TS (Zhu, Tongshuai); Zhang, S (Zhang, Shuai); Chen, ZQ (Chen, Zhongqiang); Song, A (Song, Anke); Zhang, C (Zhang, Chong); Gao, RZ (Gao, Rongzheng); Niu, W (Niu, Wei); Chen, YQ (Chen, Yequan); Fei, FC (Fei, Fucong); Tai, YL (Tai, Yilin); Li, G (Li, Guoan); Ge, BH (Ge, Binghui); Lou, WK (Lou, Wenkai); Shen, J (Shen, Jie); Zhang, HJ (Zhang, Haijun); Chang, K (Chang, Kai); Song, FQ (Song, Fengqi); Zhang, R (Zhang, Rong); Wang, XF (Wang, Xuefeng)

Source: NATURE COMMUNICATIONS Volume: 15 Issue: 1  Article Number: 2992  DOI: 10.1038/s41467-024-47231-6  Published Date: 2024 APR 6 

Abstract: Nonlinear transport is a unique functionality of noncentrosymmetric systems, which reflects profound physics, such as spin-orbit interaction, superconductivity and band geometry. However, it remains highly challenging to enhance the nonreciprocal transport for promising rectification devices. Here, we observe a light-induced giant enhancement of nonreciprocal transport at the superconducting and epitaxial CaZrO3/KTaO3 (111) interfaces. The nonreciprocal transport coefficient undergoes a giant increase with three orders of magnitude up to 105 A(-1) T-1. Furthermore, a strong Rashba spin-orbit coupling effective field of 14.7 T is achieved with abundant high-mobility photocarriers under ultraviolet illumination, which accounts for the giant enhancement of nonreciprocal transport coefficient. Our first-principles calculations further disclose the stronger Rashba spin-orbit coupling strength and the longer relaxation time in the photocarrier excitation process, bridging the light-property quantitative relationship. Our work provides an alternative pathway to boost nonreciprocal transport in noncentrosymmetric systems and facilitates the promising applications in opto-rectification devices and spin-orbitronic devices.

Accession Number: WOS:001201990300026

PubMed ID: 38582768

Author Identifiers:

Author Web of Science ResearcherID     ORCID Number

Zhang, Shuai M-6140-2018      0000-0002-2916-3394

Fei, Fucong       0000-0003-2828-022X

eISSN: 2041-1723