1/f noise in the quasi-two-dimensional organic superconductor Beta"-(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3}.
We performed resistance noise spectroscopy measurements of a bulk single crystal the quasi-two-dimensional organic superconductor {beta}{double_prime}-(ET){sub 2}SF{sub 5}CH{sub 2}CF{sub 2}SO{sub 3} and found generic 1/f{sup a}-type spectra. The temperature dependence of the nearly 1/f spectra are well described by a generalized random fluctuation model. Our data suggest that the number of fluctuators and/or their coupling to the electrical resistance depends on the temperature. The phenomenological model for the electronic fluctuations explains a pronounced peak structure in the low-frequency noise at around 100 K in terms of the thermally-activated conformational degrees of freedom of the ET molecules ethylene endgroups.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 990175
- Report Number(s):
- ANL/MSD/CP-67979; TRN: US201020%%195
- Journal Information:
- J. Phys.: Conf. Series, Vol. 200, Issue 2010; Conference: International Conference on Magnetism (ICM 2009); Jul. 26, 2009 - Jul. 31, 2009; Karlsruhe, Germany
- Country of Publication:
- United States
- Language:
- ENGLISH
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