Fine-tuning the Mott metal–insulator transition and critical charge carrier dynamics in molecular conductors
| Autor: | Benedikt Hartmann, Jens Müller, Takahiko Sasaki |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Condensed matter physics
Chemistry Mott insulator 02 engineering and technology Electron Renormalization group 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Mott transition Lattice (order) 0103 physical sciences Condensed Matter::Strongly Correlated Electrons Charge carrier Metal–insulator transition 010306 general physics 0210 nano-technology Spectroscopy |
| Zdroj: | Philosophical Magazine. 97:3477-3494 |
| ISSN: | 1478-6443 1478-6435 |
| Popis: | The unique possibilities of fine-tuning their physical properties in the vicinity of the Mott metal–insulator transition make the quasi-two-dimensional organic charge-transfer salts -(BEDT-TTF)X unprecedented model systems for studying the fundamentals of electron–electron correlations and the coupling between charge, spin and lattice degrees of freedom in reduced dimensions. The critical properties and the universality class of the Mott transition, however, are controversially debated for these materials, and information on the low-frequency dynamical properties of the correlated electrons is rather limited. By introducing fluctuation (noise) spectroscopy as a powerful new tool for studying the slow dynamics of charge carriers, in the past years we have been able to extract spectroscopic information on the coupling of charge carriers to the vibrational degrees of freedom of the crystal lattice. This is related to a glassy freezing of the BEDT-TTF molecules’ ethylene end-group (EEG) rotations at elevated ... |
| Databáze: | OpenAIRE |
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