Investigation of electron correlation effects in organic charge-transfer salts using scanning tunneling spectroscopy (B12)

• Subject Area: Experimental Condensed Matter Physics
• Term: from 2011 to 2019
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 31867626

We will investigate the electronic state of superconducting k-(BEDT-TTF)2X charge transfer salts above and below the critical temperature using scanning tunnelling electron spectroscopy on in-situ cleaved surfaces. We will test the influence of weak disorder on the temperature-dependent density of states exploiting the cooling rate dependent crystallographic order of k-(BEDT-TTF)2X salts. Taking advantage of the lateral resolution we will examine the angular- and site-dependent superconducting order parameter in order to gain insight in the pairing mechanism.

• DFG Programme: CRC/Transregios
• Subproject of: TRR 49: Condensed Matter Systems with Variable Many-Body Interactions
• Applicant Institution: Goethe-Universität Frankfurt am Main
• Co-Applicant Institution: Johannes Gutenberg-Universität Mainz
• Project Head: Professor Dr. Hans-Joachim Elmers