%0 Journal Article %1 1742-6596-200-1-012029 %A Dressel, M %A Dumm, M %A Drichko, N %A Méziere, C %A Batail, P %D 2010 %J Journal of Physics: Conference Series %K Mott conductor organic two-dimensional %N 1 %P 012029 %T Coherent particle response of two-dimensional organic conductors upon crossing the Mott transition %U http://stacks.iop.org/1742-6596/200/i=1/a=012029 %V 200 %X The two-dimensional organic charge-transfer salt κ -(BEDT-TTF) 2 CuN(CN) 2 -Br x Cl 1– x is tuned across the metal-insulator transition by varying the Br content. Temperature dependent measurements of the optical conductivity yield information on the electrodynamics of the half-filled correlated electron system. At room temperature a broad incoherent response is observed with no clear Drude peak. As the temperature drops below 50 K, an energy gap develops in the Cl-rich samples which grows to approximately 1000 cm −1 for T → 0. With increasing Br concentration spectral weight shifts into the gap region and eventually fills it up completely. A Drude-like component develops due to the coherent quasiparticles.

@article{1742-6596-200-1-012029, abstract = {The two-dimensional organic charge-transfer salt κ -(BEDT-TTF) 2 Cu[N(CN) 2 ]-Br x Cl 1– x is tuned across the metal-insulator transition by varying the Br content. Temperature dependent measurements of the optical conductivity yield information on the electrodynamics of the half-filled correlated electron system. At room temperature a broad incoherent response is observed with no clear Drude peak. As the temperature drops below 50 K, an energy gap develops in the Cl-rich samples which grows to approximately 1000 cm −1 for T → 0. With increasing Br concentration spectral weight shifts into the gap region and eventually fills it up completely. A Drude-like component develops due to the coherent quasiparticles.}, added-at = {2018-03-27T08:37:08.000+0200}, author = {Dressel, M and Dumm, M and Drichko, N and Méziere, C and Batail, P}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/26b9034123b39dc413c5cabfb186c9450/ulrikeoffenbeck}, interhash = {0465695b056a4056ec39dd7a0a37f88c}, intrahash = {6b9034123b39dc413c5cabfb186c9450}, journal = {Journal of Physics: Conference Series}, keywords = {Mott conductor organic two-dimensional}, number = 1, pages = 012029, timestamp = {2018-03-27T06:37:08.000+0200}, title = {Coherent particle response of two-dimensional organic conductors upon crossing the Mott transition}, url = {http://stacks.iop.org/1742-6596/200/i=1/a=012029}, volume = 200, year = 2010 }