Abstract
The transverse magnetoresistance of (BEDT-TTF)2Cu(NCS)2 was measured at temperatures down to 0.3K and in magnetic fields up to 24T. Shubnikov-de Haas oscillations with a single frequency of 597±7 T were found consistently for samples from six different batches. The angular dependence of the fundamental SdH frequency shows a 1/cosθ behaviour up to the highest angle measured (69°), which indicates a highly two-dimensional electronic structure of this compound (cylindrical Fermi Surface), and is in agreement with previous band structure calculations.
For H ∥ b the upper critical field Hc2 exceeds the Chandrasekhar-Clogston limit by 25%. A finite slope of HC2(T) is found even at T/Tc<0.1.
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Heidmann, CP., Biberacher, W., Müller, H., Joss, W., Andres, K. (1990). Magnetotransport in (BEDT-TTF)2 Cu(NCS)2: Shubnikov-de Haas Effect and Upper Critical Field. In: Metzger, R.M., Day, P., Papavassiliou, G.C. (eds) Lower-Dimensional Systems and Molecular Electronics. NATO ASI Series, vol 248. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-2088-1_23
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DOI: https://doi.org/10.1007/978-1-4899-2088-1_23
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