%0 Journal Article %1 PSSB:PSSB201100526 %A Kaiser, S. %A Yasin, S. %A Drichko, N. %A Dressel, M. %A Rõõm, T. %A Hüvonen, D. %A Nagel, U. %A Gard, G. L. %A Schlueter, J. A. %D 2012 %I WILEY-VCH Verlag %J physica status solidi (b) %K BEDT-TTF engery gap %N 5 %P 985-990 %R 10.1002/pssb.201100526 %T Optical investigations of the superconducting energy gap in β″-(BEDT-TTF)2SF5CH2CF2SO3 %U http://dx.doi.org/10.1002/pssb.201100526 %V 249 %X The organic salt β″-(BEDT-TTF)2SF5CH2CF2SO3 is a two-dimensional metal with a quarter-filled conduction band. In the metallic state the optical conductivity evidences interaction of the charge carriers with charge-order fluctuations that become stronger as temperature decreases. In the superconducting phase below Tc ≈ 5 K, indications of the superconducting gap with $2\Delta 12\;cm^- 1 $ are observed in the optical spectrum, corresponding to $2\Delta /k_B T_c 3.3$. Its temperature and magnetic field dependences are also consistent with predictions by the BCS theory of a weakly coupled superconductor. The conductivity ratio $_1 (T = 1.75\;K)/_1 (10\;K)$ indicates the opening of the superconducting gap in β″-(BEDT-TTF)2SF5CH2CF2SO3.

@article{PSSB:PSSB201100526, abstract = {The organic salt β″-(BEDT-TTF)2SF5CH2CF2SO3 is a two-dimensional metal with a quarter-filled conduction band. In the metallic state the optical conductivity evidences interaction of the charge carriers with charge-order fluctuations that become stronger as temperature decreases. In the superconducting phase below Tc ≈ 5 K, indications of the superconducting gap with $2{\rm \Delta }\approx 12\;{\rm cm}^{- 1} $ are observed in the optical spectrum, corresponding to $2{\rm \Delta }/k_{{\rm B}} T_{{\rm c}} \approx 3.3$. Its temperature and magnetic field dependences are also consistent with predictions by the BCS theory of a weakly coupled superconductor. The conductivity ratio $\sigma _{1} (T = 1.75\;{\rm K})/\sigma _{1} (10\;{\rm K})$ indicates the opening of the superconducting gap in β″-(BEDT-TTF)2SF5CH2CF2SO3.}, added-at = {2018-03-16T14:13:19.000+0100}, author = {Kaiser, S. and Yasin, S. and Drichko, N. and Dressel, M. and Rõõm, T. and Hüvonen, D. and Nagel, U. and Gard, G. L. and Schlueter, J. A.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/21f7179812a7e3d23d4ce962b8c04f6a6/ulrikeoffenbeck}, doi = {10.1002/pssb.201100526}, interhash = {6519a485a8c2cb309a94311c9014bc44}, intrahash = {1f7179812a7e3d23d4ce962b8c04f6a6}, issn = {1521-3951}, journal = {physica status solidi (b)}, keywords = {BEDT-TTF engery gap}, number = 5, pages = {985-990}, publisher = {WILEY-VCH Verlag}, timestamp = {2018-03-16T13:13:19.000+0100}, title = {Optical investigations of the superconducting energy gap in β″-(BEDT-TTF)2SF5CH2CF2SO3}, url = {http://dx.doi.org/10.1002/pssb.201100526}, volume = 249, year = 2012 }