三层铜酸盐超导体Bi(2)Sr(2)Ca(2)Cu(3)O(10+δ)的电子结构
Electronic structure of the trilayer cuprate superconductor Bi(2)Sr(2)Ca(2)Cu(3)O(10+delta).
作者信息
Feng D L, Damascelli A, Shen K M, Motoyama N, Lu D H, Eisaki H, Shimizu K, Shimoyama Ji J-i, Kishio K, Kaneko N, Greven M, Gu G D, Zhou X J, Kim C, Ronning F, Armitage N P, Shen Z-X
机构信息
Department of Physics, Applied Physics, and Stanford Synchrotron Radiation Laboratory, Stanford University, Stanford, California 94305, USA.
出版信息
Phys Rev Lett. 2002 Mar 11;88(10):107001. doi: 10.1103/PhysRevLett.88.107001. Epub 2002 Feb 25.
The low-energy electronic structure of the nearly optimally doped trilayer cuprate superconductor Bi(2)Sr(2)Ca(2)Cu(3)O(10+delta) is investigated by angle-resolved photoemission spectroscopy. The normal state quasiparticle dispersion and Fermi surface and the superconducting d-wave gap and coherence peak are observed and compared with those of single- and bilayer systems. We find that both the superconducting gap magnitude and the relative coherence-peak intensity scale linearly with T(c) for various optimally doped materials.
通过角分辨光电子能谱研究了近最佳掺杂的三层铜酸盐超导体Bi(2)Sr(2)Ca(2)Cu(3)O(10+δ)的低能电子结构。观测了正常态准粒子色散、费米面以及超导d波能隙和相干峰，并与单层和双层体系的相应结果进行了比较。我们发现，对于各种最佳掺杂的材料，超导能隙大小和相对相干峰强度均与临界温度T(c)呈线性关系。
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