Figure 1 (IMAGE) Tohoku University Caption The proposed theoretical mechanism for the rationality in the gradient orbital coupling of TM-O-RE unit site. Credit Hao Li et al. Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.