RELATIONSHIP OF SR2RUO4 TO THE SUPERCONDUCTING LAYERED CUPRATES

被引:277
作者
SINGH, DJ
机构
[1] Complex Systems Theory Branch, Naval Research Laboratory, Washington
来源
PHYSICAL REVIEW B | 1995年 / 52卷 / 02期
关键词
D O I
10.1103/PhysRevB.52.1358
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The properties of Sr2RuO4 are discussed in relation to the high-critical-temperature cuprate superconductors. The discussion is based on local-density-approximation band structure and phonon calculations. The electronic structure is highly anisotropic. Three hybridized Ru 4d-plane O p bands cross the Fermi energy, yielding cylindrical sheets of Fermi surface. Two of these are electronlike sheets around Gamma, while the third is an X-centered hole surface. The electronlike sheets change topology as the energy is raised leading to Van Hove singularities in close proximity to the Fermi energy. In general, the electronic properties are related to those of the cuprates, with the exception that Coulomb correlations are expected to be much less significant due to the larger bandwidth and smaller on-site energy. Sr2RuO4 is expected to be a very useful reference material for interpreting experiments on the cuprate superconductors.
引用
收藏
页码:1358 / 1361
页数:4
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