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Magnetism and electron pairing in high-Tc superconductorsCorrelated wave functions are used for YBa2Cu3O(7-y) where epsilon(d)-epsilon(p) is about 0 for Cu3d- and 02p-electrons. The electrons are delocalized (metallic) for y less than 0.5 with weak and temperature-independent paramagnetism. In contrast, the systems are conventional antiferromagnetic insulators for y greater than 0.6 with a narrow y between 0.5 and 0.6 transition region. These results are in agreement with magnetic and neutron diffraction data.
Document ID
19920051289
Document Type
Reprint (Version printed in journal)
Authors
Tsang, T. (Howard University Washington, DC, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Solid State Communications
Volume: 76
Issue: 10 1
ISSN: 0038-1098
Subject Category
SOLID-STATE PHYSICS
Funding Number(s)
CONTRACT_GRANT: NAG5-156
Distribution Limits
Public
Copyright
Other