首页> 外文会议>Conference on high temperature superconductivity >Influence of ionic dielectricity on the dynamic superconducting order parameter.
【24h】

Influence of ionic dielectricity on the dynamic superconducting order parameter.

机译:离子电介质对动态超导顺序参数的影响。

获取原文

摘要

We investigate the effect of a ferroelectric transition that is close to a superconducting transition. The closeness of the ferroelectric transition manifests itself in a large ionic dielectric constant epsilon , which is not present in "normal" metals where the conduction electrons shield it out. This reduces the Debye screening parameter from qD to qD/ epsilon at frequencies below the dispersion frequency omega _t approx approx 20 meV of epsion ( omega ). The electron-phonon matrix element is renormalized as a result. We extend the Eliashberg equations for this renormalized interaction, and develop an algorithm to solve them along the real- omega axis. We find that various anomalous properties, such as the high value of T_c, the high value of 2 DELTA _0/T_c, the d-wave symmetry of the gap parameter, the extended Van-Hove singularity, the damping of the electronic states near the FS, the pseudogap, and various other properties of the cuprates, as well as organic metals, are accounted for.
机译:我们调查的铁电化是接近超导转变的效果。铁电过渡自身表现为大离子介电常数ε,这是不存在于“正常”的金属的接近度,其中的传导电子屏蔽出来。这减少了从qD的德拜屏蔽参数qD的/小量在分散频率ω-_t约约20兆电子伏的epsion(欧米加)以下的频率。的电子 - 声子矩阵元素重新归一化结果。我们为这个重正化的相互作用延长艾利夏伯格方程,并开发一种算法来解决他们沿着实欧米茄轴。我们发现,各种异常属性,如T_C,2 DELTA的高值_0 / T_C,间隙参数,扩展范-霍夫奇点的d波对称,靠近电子态的衰减的高值FS,赝,和铜酸盐的各种其它特性,以及有机金属,被占。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号