Van Hove scenario for high Tc superconductors
作者： Julien Bok , Jacqueline Bouvier
DOI: 10.1016/J.PHYSC.2007.03.201
关键词: Gravitational singularity 、 Superconductivity 、 Condensed matter physics 、 Physics 、 Lamellar structure 、 Electronic band structure 、 Van Hove singularity 、 Saddle point 、 Doping 、 Cuprate
摘要: All the high T c cuprates (HTSC) have a lamellar structure and hence almost two dimensional properties. This 2D character leads to existence of Van Hove singularities (VHs) or saddle points in their electronic band structure. These VHs been observed experimentally all HTSC we show that they explain many physical properties these compounds, both normal superconducting states. feature induces topological transition for hole doping p o ⋍ 0.20 hole/copper atom. The constant energy curves going from hole-like electron-like.
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