Pressure-dependent optical investigations ofα−(BEDT-TTF)2I3: Tuning charge order and narrow gap towards a Dirac semimetal
| Autor: | Tobias Peterseim, A. Dengl, Tomislav Ivek, S. Wackerow, R. Beyer, Dieter Schweitzer, A. V. Pronin, Martin Dressel |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
Condensed matter physics Transition temperature Hydrostatic pressure Order (ring theory) Charge (physics) 02 engineering and technology 021001 nanoscience & nanotechnology Elementary charge 01 natural sciences Optical conductivity Semimetal 0103 physical sciences Charge carrier 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 93 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.93.195116 |
| Popis: | Infrared optical investigations of $\alpha$-(BEDT-TTF)$_2$I$_3$ have been performed in the spectral range from 80 to 8000~cm$^{-1}$ down to temperatures as low as 10~K by applying hydrostatic pressure. In the metallic state, $T > 135$~K, we observe a 50\% increase in the Drude contribution as well as the mid-infrared band due to the growing intermolecular orbital overlap with pressure up to 11~kbar. In the ordered state, $T |
| Databáze: | OpenAIRE |
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