Electronic structure of the high-Tc superconductor Sr0.2La1.8CuO4

Employing ultraviolet and inverse photoemission spectroscopy to study Sr0.2La1.8CuO4, we have obtained a density-of-states type of picture of the electronic structure of this novel material which becomes superconducting below Tc=40 K. Our results compare favorably with recent band-structure calculations. © 1987 The American Physical Society.