Anisotropy of Electronic Spin Texture in the High-Temperature Cuprate Superconductor Bi2Sr2CaCu2O8+ δ .

Autor: Liu, Wenjing, Zha, Heming, Gu, Gen-Da, Shen, Xiaoping, Ye, Mao, Qiao, Shan
Předmět:
Zdroj: Chinese Physics Letters; 3/1/2023, Vol. 40 Issue 3, p1-4, 4p
Abstrakt: Seeking new order parameters and the related broken symmetry and studying their relationship with phase transition have been important topics in condensed matter physics. Here, by using spin- and angle-resolved photoemission spectroscopy, we confirm the helical spin texture caused by spin-layer locking in the nodal region in the cuprate superconductor Bi2Sr2CaCu2O8+ δ and discover the anisotropy of spin polarizations at nodes along Γ – X and Γ – Y directions. The breaking of C 4 rotational symmetry in electronic spin texture may give deeper insights into understanding the ground state of cuprate superconductors. [ABSTRACT FROM AUTHOR]
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