Photoemission Imaging of 3D Fermi Surface Pairing at the Hidden Order Transition in URu2Si2

Abstract

We report angle-resolved photoemission spectroscopy (ARPES) experiments probing deep into the hidden order (HO) state of URu2Si2, utilizing tunable photon energies with sufficient energy and momentum resolution to detect the near Fermi surface (FS) behavior. Our results reveal: (i) the full itinerancy of the 5f electrons; (ii) the crucial three-dimensional (3D) k-space nature of the FS and its critical nesting vectors, in good comparison with density-functional theory calculations, and (iii) the existence of hot-spot lines and pairing of states at the FS, leading to FS gapping in the HO phase.

References in corpus (8)

• Imaging the Fano Lattice to 'Hidden Order' Transition in URu2Si2
• Rotational Symmetry Breaking in the Hidden-Order Phase of URu2Si2
• Emergent Rank-5 'Nematic' Order in URu2Si2
• Hastatic Order in URu2Si2
• Fermi surface instability at the hidden-order transition of URu2Si2
• Momentum-resolved evolution of the Kondo lattice into 'hidden-order' in URu2Si2
• Formation of the coherent heavy fermion liquid at the 'hidden order' transition in URu2Si2
• Sleuthing Hidden Order

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