Angle-resolved photoemission spectroscopy study of HgBa[subscript 2]CuO[subscript 4+δ]
Name
PhysRevB.89.195141.pdf
Size
1.94 MB
Format
Adobe PDF
Checksum (MD5)
2db049276cc1e7d4f3742ef2d0200166
Author(s)
Chan, M. K.
Li, Y.
Xia, D. D.
Yu, G.
Zhao, X.
Lee, W. S.
Meevasana, W.
Devereaux, T. P.
Greven, M.
Shen, Z.-X.
Date Issued
May 2014
Journal
Physical Review B
Publisher
American Physical Society
Citation
Vishik, I. M., N. Barisic, M. K. Chan, Y. Li, D. D. Xia, G. Yu, X. Zhao, et al. “Angle-Resolved Photoemission Spectroscopy Study of HgBa[subscript 2]CuO[subscript 4+δ].” Phys. Rev. B 89, no. 19 (May 2014). © 2014 American Physical Society
Version
Final published version
Abstract
HgBa[subscript 2]CuO[subscript 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[subscript c]. The superconducting gap, Fermi surface, and nodal band renormalization measured here provide a crucial momentum-space complement to other experimental probes.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.89.195141
