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APS » Journals » Phys. Rev. B » Volume 35 » Issue 10
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Phys. Rev. B 35, 5327–5329 (1987)

Energy gap in the high-Tc superconductor La1.85Sr0.15CuO4

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U. Walter and M. S. Sherwin
Department of Physics, University of California, Berkeley, California 94720

A. Stacy
Department of Chemistry, University of California, Berkeley, California 94720 and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720

P. L. Richards
Department of Physics, University of California, Berkeley, California 94720 and Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720

A. Zettl
Department of Physics, University of California, Berkeley, California 94720

Received 29 January 1987; published in the issue dated 1 April 1987

The far-infrared (FIR) reflectance of the high-Tc superconductor La1.85Sr0.15CuO4 has been measured in the frequency range 15 to 400 cm-1. Below the superconducting onset temperature T=36 K, absorption features in the FIR spectrum indicate an energy gap with a functional form similar to the BCS gap, but with a smaller magnitude.

© 1987 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.35.5327
DOI:
10.1103/PhysRevB.35.5327
PACS:
74.70.Ya, 74.30.Gn
 
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