H. KAMERLINGH ONNES PRIZE LECTURE 4PR

Thursday, Feb. 24, 9:15 a.m. – 9:45 a.m., General Assembly A (GRB)

Chair: P.H. Kes (Leiden U)

4PR.1 Recent Photoemission Data from Cuprate Superconductors

Zhi-xun Shen, Dept. of Physics and Applied Physics, Stanford University, Stanford, CA 94305

Presenting Author: Z.-X. Shen

We present recent angle-resolved photoemission data from cuprate superconductors and the related compounds. In the Nd doped and Nd-free LSCO systems, the data can be best interpreted in terms of the charge ordered state. The low energy spectral weight is concentrated near the (0,0) to (1,0) line with a width of near 1/4 of the Brillouin zone. At the same time, the spectral weight near the (1,1) direction is strongly suppressed. The data from materials such as Bi2212, the situation is more complex. On the one hand, one sees spectral features resembling data from LSCO. On the other hand, one sees a clear dispersive feature along the (1,1) direction, in contrast to data from LSCO family. Other results from Bi2212, Bi2201 and the electron-doped materials will be discussed also.