...
首页> 外文期刊>Physical review >Incommensurate nematic fluctuations in two-dimensional metals
【24h】

Incommensurate nematic fluctuations in two-dimensional metals

机译:二维金属的向列波动不相称

获取原文
获取原文并翻译 | 示例
           

摘要

To assess the strength of nematic fluctuations with a finite wave vector in a two-dimensional metal, we compute the static d-wave polarization function for tight-binding electrons on a square lattice. At Van Hove filling and zero temperature the function diverges logarithmically at q = 0. Away from Van Hove filling the ground-state polarization function exhibits finite peaks at finite wave vectors. A nematic instability driven by a sufficiently strong attraction in the d-wave charge channel thus leads naturally to a spatially modulated nematic state, with a modulation vector that increases in length with the distance from Van Hove filling. Above Van Hove filling, for a Fermi surface crossing the magnetic Brillouin zone boundary, the modulation vector connects antiferromagnetic hot spots with collinear Fermi velocities.
机译:为了用二维金属中的有限波矢量评估向列波动的强度,我们计算了正方形晶格上紧密结合的电子的静态d波极化函数。在Van Hove填充和零温度时,该函数在q = 0处对数发散。远离Van Hove填充,基态极化函数在有限波矢量处显示有限峰值。因此,由d波电荷通道中足够强的吸引力驱动的向列不稳定性自然导致空间调制的向列状态,其调制矢量的长度随距Van Hove填充的距离而增加。在Van Hove填充上方,对于穿过磁性布里渊区边界的费米表面,调制矢量将反铁磁热点与共线费米速度相连。

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