Fermi Surface Topology of Bi₂Sr₂CaCu₂O₈₊d at hν=33eV: hole or electron-like?
Gromko, A. D. · Chuang, Y. -D. · Dessau, D. S. · Nakamura, K. · Ando, Yoichi
Original · EN
We present new results from Angle-Resolved Photoemission experiments (ARPES) on overdoped Bi₂Sr₂CaCu₂O₈₊d (BSCCO) crystals. With greatly improved energy and momentum resolution, we clearly identify the existence of electron-like portions of the Fermi Surface (FS) near M at hν=33eV. This is consistent with previously reported data and is robust against various FS crossing criteria. It is not due to an artifact induced from k-dependent matrix element effects. We also present evidence for a breakage in the FS pointing to the possible existence of two types of electronic components.
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