• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Physica, C. Superconductivity and its applications >Are spin and charge really separated in HTS? - Comparison between theory and experiment
【24h】

Are spin and charge really separated in HTS? - Comparison between theory and experiment

机译：在HTS中旋转和电荷真的分开了吗？ -理论与实验的比较

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We examine the single-particle, spin and charge excitations in two-dimensional insulating cuprates in the numerically exact diagonalization method on small clusters which has been successfully applied in the study of the spin-charge separation in one-dimensional cuprates, and analyze the angle-resolved photoemission spectra in an insulating cuprate Ca2CuO2Cl2, a parent compound of high temperature superconductors (HTS). It is shown that a novel spin liquid state is realized around a doped hole with momentum k =(pi, 0), where the spin and charge degrees of freedom of electrons are decoupled. The dispersion around the momentum follows the form of a d(x2-y2) gap, although the ground state is the antiferromagnetic Neel state. The continuous change of the spectra from insulator to underdoped HTS implies that the excitations around (pi ,0) contain a clue for HTS. [References: 20]
机译：我们使用数值精确的对角线化小簇方法研究了二维绝缘铜率中的单粒子，自旋和电荷激发，该方法已成功应用于一维铜率中自旋电荷分离的研究，并分析了角度绝缘的铜酸盐Ca2CuO2Cl2（高温超导体（HTS）的母体）中的高分辨光发射光谱。结果表明，在动量为k =（pi，0）的掺杂空穴周围实现了一种新型的自旋液态，电子的自旋和电荷自由度解耦。尽管基态是反铁磁尼尔态，但动量周围的色散遵循d（x2-y2）间隙的形式。光谱从绝缘体到未掺杂的高温超导的连续变化意味着（pi，0）附近的激发包含高温超导的线索。 [参考：20]

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