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http://hdl.handle.net/2445/184508
Title: | Electronic structure of the α-(BEDT-TTF)2I3 surface by photoelectron spectroscopy |
Author: | Tisserond, Emilie Nilforoushan, Niloufar Caputo, Marco Alemany i Cahner, Pere Canadell, Enric, 1950- Khalil, Lama Vobornik, Ivana Fujii, Jun Das Kumar, Pranab Mézière, Cécile Batail, Patrick Pouget, Jean-Paul Pasquier, Claude Marsi, Marino Monteverde, Miguel |
Keywords: | Estructura electrònica Espectroscòpia de fotoelectrons Electronic structure Photoelectron spectroscopy |
Issue Date: | 3-Apr-2019 |
Publisher: | Springer Verlag |
Abstract: | We 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. |
Note: | Versió postprint del document publicat a: https://doi.org/10.1140/epjb/e2019-90565-4 |
It is part of: | European Physical Journal B, 2019, vol. 92, num. 70, p. 1-6 |
URI: | http://hdl.handle.net/2445/184508 |
Related resource: | https://doi.org/10.1140/epjb/e2019-90565-4 |
ISSN: | 1434-6028 |
Appears in Collections: | Articles publicats en revistes (Ciència dels Materials i Química Física) Articles publicats en revistes (Institut de Química Teòrica i Computacional (IQTCUB)) |
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714083.pdf | 4.37 MB | Adobe PDF | View/Open |
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