It must be emphasized that the agreement around the maximum in the resistivity for Au-Sn, and in­ deed for all noble metal-Sn alloys is purely quali­ tative. The resistivity integrand in Eq. (7) for high noble metal concentrations is dominated almost en­ tirely by the low angle behaviour of the Iij(K) (see Fig. 5), particularly those for Au-Au and Au-Sn for example, and accurate data in this re...

Sinkholes in dolomitic areas are notoriously difficult geophysical targets, and selecting an appropriate geophysical solution is not straightforward. Electrical resistivity imaging, or tomography (RESTOM) is well suited to mapping sinkholes because of the ability of the technique for detecting resistive features and discriminating subtle resistivity variations. RESTOM surveys were conducted at ...

Composition dependence of resistivity is studied in amorphous (Fe 100Àx Co x) 89Ày Zr 7 B 4 Cu y (0 x 50, y ¼ 0, 1) alloys. The two-current model proposed by Mott for crystalline materials is extended to a disordered amorphous system where s-d scattering is dominant in electron conduction. A rigid-band assumption is made due to the small atomic number difference between Fe and Co. Band structur...

The synthesis and crystallographic, thermodynamic, and transport properties of single crystalline Rh 9 In 4 S 4 were studied. The resistivity, magnetization, and specific heat measurements all clearly indicate bulk superconductivity with a critical temperature, T c ∼ 2.25 K. The Sommerfeld coefficient γ and the Debye temperature(Θ D) were found to be 34 mJ mol −1 K −2 and 217 K, respectively. T...

The c-axis charge dynamics of copper oxide materials in the underdoped and optimally doped regimes has been studied by considering the incoherent interlayer hopping. It is shown that the c-axis charge dynamics for the chain copper oxide materials is mainly governed by the scattering from the in-plane fluctuation, and the c-axis charge dynamics for the no-chain copper oxide materials is dominate...

We measure the temperature-dependent carrier density and resistivity of the topological surface state of thin exfoliated Bi(2)Se(3) in the absence of bulk conduction. When the gate-tuned chemical potential is near or below the Dirac point, the carrier density is strongly temperature-dependent, reflecting thermal activation from the nearby bulk valence band, while, above the Dirac point, unipola...

Electrical resistivity measurements have been carried out for both flash-evaporated reentrant spin glasses RSGs Ni76−xPdx Mn24 and Ni74.5Mn23.5Pd2, as well as Ni75Mn23Pd2, a pure SG. These measurements were carried out at temperatures down to 4 K. We observed a very deep resistivity minimum at about 75 K for Ni74Mn24Pd2. It was found previously Öner et al., J. Appl. Phys. 89, 7044 2001 that thi...

Madan Bozorg is an active copper mine located in NE Iran, which is a part of the very wide copper mineralization zone named Miami-Sabzevar copper belt. The main goal of this research work is the 3D model construction of the induced polarization (IP) and resistivity (Rs) data with quantifying the uncertainties using geostatistical methods and drilling. Four profiles were designed and surveyed us...