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Angle-resolved photoemission spectroscopy study of HgBa 2 CuO 4+δ (CROSBI ID 217277)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Vishik, I.M. ; Barišić, Neven ; ... ; Shen, Z.-G. Angle-resolved photoemission spectroscopy study of HgBa 2 CuO 4+δ // Physical review. B, Condensed matter and materials physics, 89 (2014), 195141-1-195141-9. doi: 10.1103/PhysRevB.89.195141

Podaci o odgovornosti

Vishik, I.M. ; Barišić, Neven ; ... ; Shen, Z.-G.

engleski

Angle-resolved photoemission spectroscopy study of HgBa 2 CuO 4+δ

HgBa 2 CuO 4+δ (Hg1201) has been shown to be a model cuprate for scattering, optical, and transport experiments, but angle-resolved photoemission spectroscopy (ARPES) data are still lacking owing to the absence of a charge- neutral cleavage plane. We report on progress in achieving the experimental conditions for which quasiparticles can be observed in the near-nodal region of the Fermi surface. The d - wave superconducting gap in near-optimally- doped Hg1201 is found to have a maximum of 39 meV. At low temperature, a kink is detected in the nodal dispersion at approximately 51 meV below the Fermi level, an energy that is different from other cuprates with comparable T c . The superconducting gap, Fermi surface, and nodal band renormalization measured here provide a crucial momentum-space complement to other experimental probes.

HgBa 2 CuO 4+δ; ARPES

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Podaci o izdanju

89

2014.

195141-1-195141-9

objavljeno

1098-0121

10.1103/PhysRevB.89.195141

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