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oai:figshare.com:article/33732376 2026-09-14T11:14:56Z portal_1197 item_type_3 month_year_09_2026

Data for Broken rotational symmetry on the Fermi surface of a high-Tc superconductor B.J Ramshaw (24878023) N. Harrison (6643019) S. E. Sebastian (24878026) S. Ghannadzadeh (24817432) K. A. Modic (24817441) D. A. Bonn (24816775) W. N. Hardy (24816778) Ruixing Liang (24816772) Paul Goddard (564595) Fermi surfaces Superconductors Migrated from ePrints Broken fourfold rotational (C4) symmetry is observed in the experimental properties of several classes of unconventional superconductors. It has been proposed that this symmetry breaking is important for superconducting pairing in these materials, but in the high-Tc cuprates this broken symmetry has never been observed on the Fermi surface. Here we report a pronounced anisotropy in the angle dependence of the interlayer magnetoresistance of the underdoped high transition temperature (high-Tc) superconductor YBa2Cu3O6.58, directly revealing broken C4 symmetry on the Fermi surface. Moreover, we demonstrate that this Fermi surface has C2 symmetry of the type produced by a uniaxial or anisotropic density-wave phase. This establishes the central role of C4 symmetry breaking in the Fermi surface reconstruction of YBa2Cu3O6+δ , and suggests a striking degree of universality among unconventional superconductors.<br><br>YBCO58_4p2K_phi0 YBCO58_4p2K_phi15 YBCO58_4p2K_phi30 YBCO58_4p2K_phi45 YBCO58_4p2K_phi60 YBCO58_4p2K_phi75 YBCO58_4p2K_phi90 YBCO58_4p2K_phi105 YBCO58_4p2K_phi120 YBCO58_4p2K_phi135 YBCO58_4p2K_phi150 YBCO58_4p2K_phi165 YBCO58_4p2K_phi180 YBCO58_15K_phi0 YBCO58_15K_phi15 YBCO58_15K_phi30 YBCO58_15K_phi45 YBCO58_15K_phi60 YBCO58_15K_phi75 YBCO58_15K_phi90 2017-03-02T00:00:00Z Dataset Dataset 10.82444/warw.33732376.v1 https://figshare.com/articles/dataset/Data_for_Broken_rotational_symmetry_on_the_Fermi_surface_of_a_high-Tc_superconductor/33732376 CC BY 4.0