Mott Transition and Transport Crossovers in the Organic Compound κ − ( B E D T − T T F ) 2 C u [ N ( C N ) 2 ] C l

Abstract : We have performed in-plane transport measurements on the two-dimensional organic salt-BEDT-TTF† 2 Cu‰NCN† 2 ŠCl. A variable (gas) pressure technique allows for a detailed study of the changes in conductivity through the insulator-to-metal transition. We identify four different transport regimes as a function of pressure and temperature (corresponding to insulating, semiconducting,''bad metal,'' and strongly correlated Fermi-liquid behaviors). Marked hysteresis is found in the transition region, which displays complex physics that we attribute to strong spatial inhomogeneities. Away from the critical region, good agreement is found with a dynamical mean-field calculation of transport properties using the numerical renormalization group technique.
Complete list of metadatas

Cited literature [14 references]  Display  Hide  Download

https://hal-univ-tours.archives-ouvertes.fr/hal-01870016
Contributor : Patrice Limelette <>
Submitted on : Friday, September 7, 2018 - 10:08:22 AM
Last modification on : Tuesday, May 14, 2019 - 10:43:37 AM
Long-term archiving on : Saturday, December 8, 2018 - 12:26:23 PM

File

limelette-2003-PRL-91.pdf
Publisher files allowed on an open archive

Identifiers

Citation

P. Limelette, P. Wzietek, S. Florens, A. Georges, T. Costi, et al.. Mott Transition and Transport Crossovers in the Organic Compound κ − ( B E D T − T T F ) 2 C u [ N ( C N ) 2 ] C l. Physical Review Letters, American Physical Society, 2003, 91 (1), pp.016401. ⟨10.1103/physrevlett.91.016401⟩. ⟨hal-01870016⟩

Share

Metrics

Record views

287

Files downloads

167