Tisserond, EmilieNilforoushan, NiloufarCaputo, MarcoAlemany i Cahner, PereCanadell, Enric, 1950-Khalil, LamaVobornik, IvanaFujii, JunDas Kumar, PranabMézière, CécileBatail, PatrickPouget, Jean-PaulPasquier, ClaudeMarsi, MarinoMonteverde, Miguel2022-03-292022-03-292019-04-031434-6028https://hdl.handle.net/2445/184508We report anomalies observed in photoelectron spectroscopy measurements performed on α-(BEDT-TTF)2I3 crystals. In particular, above its metal-insulator transition temperature (T ' 135 K), we observe the lack of a sharp Fermi edge in contradiction with the metallic transport properties exhib- ited by this quasi-bidimensional organic material. We interpret these unusual results as a signature of a one-dimensional electronic behavior confirmed by DFT band structure calculations. Using photoelectron spectroscopy we probe a Luttinger liquid with a large correlation parameter (α ą 1) that we interpret to be caused by the chain-like electronic structure of α-(BEDT-TTF)2I3 surface doped by iodine defects. These new surface effects are inaccessible by bulk sensitive measurements of electronic transport techniques.6 p.application/pdfeng(c) Springer Verlag, 2019Estructura electrònicaEspectroscòpia de fotoelectronsElectronic structurePhotoelectron spectroscopyinfo:eu-repo/semantics/article7140832022-03-29info:eu-repo/semantics/openAccess