Comparative resistivity measurements have been performed on differently prepared κ-(ET)2Cu[N(CN)2]Br single crystals. While the Tc values and their shifts under hydrostatic pressure are found to be sample independent, the resistivity profiles, especially around the resistivity hump at 90 K and the low-temperature ρ ∝ T2 behavior, show striking sample-to-sample variations. In the absence of significant differences in the crystals’ structural parameters and chemical compositions, as proved by high-resolution X-ray and electron-probe-microanalysis studies, these results indicate that real structure phenomena, i.e. disorder and/or defects, strongly affect the inelastic scattering in these molecular conductors.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Kanoda K. (1997). Hyperfine Interact. 104:235
Limelette P. et al. (2003). Phys. Rev. Lett 91:016401
Lang M., and J. Müller in The Physics of Superconductors Vol. II, Bennemann K.H., and Ketterson J.B., (eds.), Springer, Berlin 2004.
Merino J., and McKenzie R.H. (2000). Phys. Rev. B 61:7996
Montgomery L.K. et al. (1999). Synth. Met. 103:1878
Strack Ch. et al. (2005). Phys. Rev. B 72:054511
Kini A.M. et al. (1990). Inorg. Chem. 29:2555
Buravov L.I. et al. (1994). J. Phys. I 4:441
Müller J. et al. (2002). Phys. Rev. B 65:144521
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Lang, M., Strack, C., Akinci, C. et al. Resistivity Studies on Different Variants of κ-(BEDT-TTF)2Cu[N(CN)2]Br: Evidence for Disorder and /or Defect-Induced Inelastic Scattering Contributions. J Low Temp Phys 142, 191–197 (2006). https://doi.org/10.1007/s10909-006-9018-x
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10909-006-9018-x