| Title | Angle-resolved photoemission spectroscopy study of HgBa2CuO4+delta |
| Authors | Vishik, I. M. Barisic, N. 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. |
| Affiliation | MIT, Dept Phys, Cambridge, MA 02139 USA. Univ Minnesota, Sch Phys & Astron, Minneapolis, MN 55455 USA. Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria. Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100871, Peoples R China. Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China. Jilin Univ, Coll Chem, State Key Lab Inorgan Synth & Preparat Chem, Changchun 130012, Peoples R China. SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA. Stanford Univ, Dept Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA. Stanford Univ, Dept Appl Phys, Geballe Lab Adv Mat, Stanford, CA 94305 USA. Suranaree Univ Technol, Sch Phys, Muang 30000, Nakhon Ratchasi, Thailand. |
| Keywords | HIGH-TEMPERATURE SUPERCONDUCTORS T-C CUPRATE SUPERCONDUCTORS PSEUDOGAP PHASE ENERGY SURFACE GAP BI2SR2CACU2O8+DELTA COMPETITION DISPERSION |
| Issue Date | 2014 |
| Publisher | physical review b |
| Citation | PHYSICAL REVIEW B.2014,89,(19). |
| Abstract | HgBa2CuO4+delta (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. |
| URI | http://hdl.handle.net/20.500.11897/389559 |
| ISSN | 1098-0121 |
| DOI | 10.1103/PhysRevB.89.195141 |
| Indexed | SCI(E) |
| Appears in Collections: | 量子材料科学中心 |
