Bandwidth tuning triggers interplay of charge order and superconductivity in two-dimensional organic materials.
Journal Article
·
· Phys. Rev. Lett.
We observe charge-order fluctuations in the quasi-two-dimensional organic superconductor {beta}{double_prime}-(BEDT-TTF){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}, both by means of vibrational spectroscopy, locally probing the fluctuating charge order, and by investigating the in-plane dynamical response by infrared reflectance spectroscopy. The decrease of the effective electronic interaction in an isostructural metal suppresses both charge-order fluctuations and superconductivity, pointing to their interplay. We compare the results of our experiments with calculations on the extended Hubbard model.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); Margerethe von Wrangill Program
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 1004858
- Report Number(s):
- ANL/MSD/JA-68789; TRN: US201104%%1142
- Journal Information:
- Phys. Rev. Lett., Vol. 105, Issue Nov. 9, 2010
- Country of Publication:
- United States
- Language:
- ENGLISH
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