Speaker
Description
Underdoped cuprate high TC superconductors have been intensively studied, especially since the discovery of the pseudogap phenomenon in the 1990’s [1]. An important step towards the identification of the HTSC pairing mechanism was the discovery of a charge density wave (CDW) existing in large parts of the underdoped phase diagram [2-5]. In zero magnetic field (B=0) the short-ranged, static CDW is induced by defects, while a long-range CDW can be induced for high B-fields along the c-axis (perpendicular to the CuO2 layers).
Here we aim to search for the origin of this CDW and its relationship with superconductivity (competing or interwined order). We performed reflection experiments from THz-NIR region (50cm-1-6000cm-1) while applying high magnetic fields up to B=30Tesla.
