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

Author

Liu, Wenjing, Zha, Heming, Gu, Gen-Da, Shen, Xiaoping, Ye, Mao, and Qiao, Shan

Subjects
*CUPRATES, *HIGH temperature superconductors, *CONDENSED matter physics, *PHOTOELECTRON spectroscopy, *PHASE transitions, *ANISOTROPY, *SPIN polarization
Abstract

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]

Published
2023
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