...
首页> 外文期刊>Physical review >Differences in the high-energy kink between hole- and electron-doped high-T_c superconductors
【24h】

Differences in the high-energy kink between hole- and electron-doped high-T_c superconductors

机译:空穴和电子掺杂的高T_c超导体之间的高能扭结差异

获取原文
获取原文并翻译 | 示例
           

摘要

We have performed an angle-resolved photoemission spectroscopy (ARPES) study of Nd_(1.85)Ce_(0.15)CuO_4 (NCCO) in order to elucidate the origin of the high-energy kink (HEK) observed in the high-T_c superconductors (HTSCs). The energy scale of the HEK in NCCO is large compared with that in hole-doped HTSCs, consistent with previous ARPES studies. From measurement in a wide momentum region, we have demonstrated that between the hole- and electron-doped HTSCs, the energy position of the HEK is shifted approximately by the amount of the chemical potential difference. Also, we have found that around (π,0) the HEK nearly coincides with the band bottom while around the node the band reaches the incoherent region and the HEK appears at the boundary between the coherent and incoherent regions.
机译:我们已经对Nd_(1.85)Ce_(0.15)CuO_4(NCCO)进行了角分辨光发射光谱(ARPES)研究,以便阐明在高T_c超导体(HTSC)中观察到的高能扭结(HEK)的起源。 )。与以前的ARPES研究一致,NCCO中HEK的能量规模比掺杂空穴的HTSC大。通过在较宽的动量范围内进行测量,我们已经证明,在空穴和电子掺杂的HTSC之间,HEK的能量位置大约偏移了化学势差的量。同样,我们发现,在(π,0)附近,HEK与带底部几乎重合,而在结点附近,带到达非相干区域,HEK出现在相干和非相干区域之间的边界处。

著录项

  • 来源
    《Physical review》 |2009年第18期|184506.1-184506.4|共4页
  • 作者单位

    Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;

    Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;

    Institute of Material Structures Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan;

    Institute of Material Structures Science, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan;

    Department of Advanced Materials Science, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan;

    Department of Advanced Materials Science, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku, Yokohama, Kanagawa 226-8503, Japan;

    Department of Advanced Materials Science, University of Tokyo, Kashiwanoha 5-1-5, Kashiwa, Chiba 277-8561, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    cuprate superconductors (high-Tc and insulating parent compounds); electron density of states and band structure of crystalline solids; photoemission and photoelectron spectra; electronic structure;

    机译:铜酸盐超导体(高Tc和绝缘母体化合物);态固体的电子态密度和能带结构;光发射和光电子光谱;电子结构;

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