National Synchrotron Light Source Seminar
"From Cuprates to Iron Arsenides: an ARPES perspective."
Thursday, May 2, 2013, 10 am
Conference Room A/B, Bldg. 490
Hosted by: Elio Vescovo
The presentation will focus both on scientific and technical aspects of modern angle-resolved photoemission spectroscopy (ARPES). In the firs part I will provide a brief introduction into ARPES, explaining why it has evolved into an indispensable experimental technique, when a basic band structure and/or many-body effects of a new material has to be studied. As an illustration several particular studies will be provided, focused on: (1) renormalization effects in hole doped Bi-122; (2) superconductivity and renormalization in YBa2Cu3O7âˆ'Î´; (3) origin of pseudogap in electron doped Pr2âˆ'xCexCuO4; (4) stripe phase in La1.8âˆ'1/8Eu0.2Sr1/8CuO4 ; and finally (5) peculiarities of electronic structure of Ba1-xKxFe2As2 and LiFeAs. The second part of my presentations will cover certain aspects of 13 ARPES end-station development at BESSY and argumentation for introduction micrometer (or better) lateral resolution in angle-resolved photoemission spectroscopy.