Ultrasonic attenuation in superconducting molybdenum-rhenium alloys

Ordering of the vortex lattice in Mo-Re films

“…which is also used to determine the upper critical field at zero temperature [21]. For the sample MR6 the BCS coherence length ξ 0 is found to be 70 nm from the relation ξ 0 = v F /π∆(0) where v F = 5 × 10 5 m/s is the Fermi velocity [22] and ∆(0) = 1.8k B T c [23] is the BCS superconducting gap at zero temperature. Finally the mean free path has been estimated to be 3 nm from the measured low temperature resistivity ρ 10 K (expressed in µΩ cm), using the relation [24] = v 0 0.22…”

Effective adsorption of perrhenate ions on the filamentous sheath-forming bacteria, Sphaerotilus montanus, Sphaerotilus natans and Thiothrix fructosivorans

“…Rhenium is an exceptionally rare metal element that has been widely used in the production of high‐temperature alloys, (Mueller et al, 2000; Raffo, 1969; Wurster et al, 2010) as an additive for superconducting alloys (Ashkin et al, 1971; Singh et al, 2014) as a reforming catalyst in oil refineries, (Betizeau et al, 1976; Biloen et al, 1980; van Trimpont & Marin, 1986) for promoting syngas reaction catalysts, (Cook et al, 2014; Simonetti et al, 2007; Vada et al, 1995) and in nuclear medicine (Deutsch et al, 1986; Savio et al, 2001; Vucina & Han, 2003). Its abundance in the earth's crust is estimated to be <1 ppb and the annual production is several tons.…”