Ba 4d core-level spectroscopy in the YBa2Cu3O6.9 high-Tc superconductor: Existence of a surface-shifted component

R. Liu; C. G. Olson; A.-B. Yang; C. Gu; D. W. Lynch; A. J. Arko; R. S. List; R. J. Bartlett; B. W. Veal; J. Z. Liu; A. P. Paulikas; K. Vandervoort

doi:10.1103/PhysRevB.40.2650

Ba 4d core-level spectroscopy in the YBa2Cu3O6.9 high-Tc superconductor: Existence of a surface-shifted component

R. Liu, C. G. Olson, A.-B. Yang, C. Gu, D. W. Lynch, A. J. Arko, R. S. List, R. J. Bartlett, B. W. Veal, J. Z. Liu, A. P. Paulikas, K. Vandervoort

DOI 10.1103/PhysRevB.40.2650 · Physical Review B

T1

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Abstract

Two sets of spin-orbit split Ba 4d core-level photoemission peaks were observed in a crystal of YBa2Cu3O6.9. From constant final-state measurements taken as a function of kinetic energy, the low-binding-energy doublet is identified as a surface component. Possible origins of the surface shift are discussed.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O6.9 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	midpoint