Universal waterfall-like feature in the spectral function of high temperature superconductors
| Autor: | Gey-Hong Gweon, Jeff Graf, Alessandra Lanzara |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
High-temperature superconductivity
FOS: Physical sciences Energy Engineering and Power Technology Position and momentum space Angle-resolved photoemission spectroscopy Electronic structure 01 natural sciences 010305 fluids & plasmas law.invention Superconductivity (cond-mat.supr-con) Condensed Matter - Strongly Correlated Electrons law Condensed Matter::Superconductivity 0103 physical sciences Cuprate Electrical and Electronic Engineering 010306 general physics Physics Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Condensed Matter - Superconductivity Condensed Matter Physics Electronic Optical and Magnetic Materials Quasiparticle Condensed Matter::Strongly Correlated Electrons Strongly correlated material Anomaly (physics) |
| Zdroj: | Physica C: Superconductivity and its Applications. :194-197 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/j.physc.2007.03.005 |
| Popis: | By performing high resolution angle resolved photoemission spectroscopy (ARPES) experiments on four different families of p-type cuprates, over an energy range much bigger than investigated before, we report the discovery of a universal high energy anomaly in the spectral function. This anomaly is characterized by the presence of two new high energy scales $E_1= 0.35-0.45$eV and $E_2=0.8-0.9$eV and the pinning of the main ARPES spectral function along the boundary of a diamond in the momentum space. This anomaly unveils a missing link between the doped oxygen holes and the quasiparticles, providing a full range of relevant interaction to the high Tc problem. Comment: to be published in the proceeding of the M2S-HTS - July 2006 |
| Databáze: | OpenAIRE |
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