| Autor: |
Zhou X. J., Chen Chuangtian, Sasagawa T., Xu Zuyan, Chen Xianhui, Wang Xiaoyang, Wu Tao, Zhu Yong, Zhou Yong, Wang Guiling, Lu Wei, Dong Xiaoli, Jia Xiaowen, Meng Jianqiao, Zhao Lin, Zhang Wentao, Liu Guodong, Liu Haiyun |
| Jazyk: |
angličtina |
| Rok vydání: |
2012 |
| Předmět: |
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| Zdroj: |
EPJ Web of Conferences, Vol 23, p 00005 (2012) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/20122300005 |
| Popis: |
High-resolution laser-based angle-resolved photoemission measurements have been carried out on the electron-doped (Nd1.85Ce0.15)CuO4 high temperature superconductor. We have revealed a clear kink at ~60 meV in the dispersion along the (0,0)–(π,π) nodal direction, accompanied by a peak-dip-hump feature in the photoemission spectra. This indicates that the nodal electrons are coupled to collective excitations (bosons) in electron-doped superconductors, with the phonons as the most likely candidate of the boson. This finding has established a universality of nodal electron coupling in both hole- and electron-doped high temperature cuprate superconductors. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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