%0 Journal Article %1 0953-8984-25-43-436004 %A Tomić, S %A Pinterić, M %A Ivek, T %A Sedlmeier, K %A Beyer, R %A Wu, D %A Schlueter, J A %A Schweitzer, D %A Dressel, M %D 2013 %J Journal of Physics: Condensed Matter %K magnetic ordering %N 43 %P 436004 %T Magnetic ordering and charge dynamics in κ-(BEDT-TTF)2CuN(CN)2Cl %U http://stacks.iop.org/0953-8984/25/i=43/a=436004 %V 25 %X The Mott insulator κ-(BEDT-TTF) 2 CuN(CN) 2 Cl consists of molecular dimers arranged on an anisotropic triangular lattice. At low temperatures a pronounced dielectric anomaly is observed, and eventually a canted antiferromagnetic ground state forms. Optical spectroscopy clearly rules out charge imbalance and the existence of quantum electric dipoles with a dipolar-spin coupling. Here we suggest a novel form of spin–charge coupling where the prominent in-plane dielectric response in κ-(BEDT-TTF) 2 CuN(CN) 2 Cl is explained by short-range discommensurations of the antiferromagnetic phase in the temperature range30 K < T < 50 K, and by relaxation of charged domain walls in the ferromagnetic structure at lower temperatures.

@article{0953-8984-25-43-436004, abstract = {The Mott insulator κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Cl consists of molecular dimers arranged on an anisotropic triangular lattice. At low temperatures a pronounced dielectric anomaly is observed, and eventually a canted antiferromagnetic ground state forms. Optical spectroscopy clearly rules out charge imbalance and the existence of quantum electric dipoles with a dipolar-spin coupling. Here we suggest a novel form of spin–charge coupling where the prominent in-plane dielectric response in κ-(BEDT-TTF) 2 Cu[N(CN) 2 ]Cl is explained by short-range discommensurations of the antiferromagnetic phase in the temperature range30 K < T < 50 K, and by relaxation of charged domain walls in the ferromagnetic structure at lower temperatures.}, added-at = {2018-03-14T15:05:46.000+0100}, author = {Tomić, S and Pinterić, M and Ivek, T and Sedlmeier, K and Beyer, R and Wu, D and Schlueter, J A and Schweitzer, D and Dressel, M}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/2f535b59d233ef3d440ef5f88a6eb865b/ulrikeoffenbeck}, interhash = {b038a1d03e8ad48c62717ea3a7b09f80}, intrahash = {f535b59d233ef3d440ef5f88a6eb865b}, journal = {Journal of Physics: Condensed Matter}, keywords = {magnetic ordering}, number = 43, pages = 436004, timestamp = {2018-03-14T14:05:46.000+0100}, title = {Magnetic ordering and charge dynamics in κ-(BEDT-TTF)2Cu[N(CN)2]Cl}, url = {http://stacks.iop.org/0953-8984/25/i=43/a=436004}, volume = 25, year = 2013 }