New research has uncovered one-dimensional superconducting stripes at the EuO/KTO interface, a result of the ferromagnetic proximity effect. This discovery highlights the significant influence of magnetism on superconducting states and provides a platform for further exploration of high-temperature superconductivity.
A team led by Chen Xianhui and Professor Xiang Ziji from the CAS Key Laboratory of Strongly-Coupled Quantum Matter Physics and the Department of Physics at the, uncovered a unique superconducting state characterized by one-dimensional superconducting stripes. This state is induced by the ferromagnetic proximity effect in an oxide heterostructure made up of ferromagnetic EuO and -oriented KTaO3 .
Building upon their prior achievements, the research team delved deeper into the superconductivity of this system and its relationship with the ferromagnetic proximity effect, meticulously adjusting the carrier concentration of the two-dimensional electron gas residing at the interface. They uncovered an intriguing in-plane anisotropy in superconductivity among samples with low carrier concentrations, which nevertheless vanished in samples exhibiting higher carrier concentrations.
This study reveals the existence of a superconducting stripe phase at the EuO/KTO interface, induced by the ferromagnetic proximity effect. It presents the first unambiguous experimental evidence of exotic superconducting states emerging from the intricate coupling between superconductivity and magnetism at oxide interfaces.
Reference: “Superconducting stripes induced by ferromagnetic proximity in an oxide heterostructure” by Xiangyu Hua, Zimeng Zeng, Fanbao Meng, Hongxu Yao, Zongyao Huang, Xuanyu Long, Zhaohang Li, Youfang Wang, Zhenyu Wang, Tao Wu, Zhengyu Weng, Yihua Wang, Zheng Liu, Ziji Xiang and Xianhui Chen, 11 March 2024,SciTechDaily: Home of the best science and technology news since 1998. Keep up with the latest scitech news via email or social media.
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