We present the results of 75 As nuclear magnetic resonance (NMR), nuclear quadrupole resonance (NQR), and resistivity measurements in KFe 2 As 2 under pressure ( p ). The temperature dependence of the NMR shift, nuclear spin-lattice relaxation time ( T 1 ), and resistivity show a crossover between a high-temperature incoherent, local-moment behavior and a low-temperature coherent behavior at a ...

Abstract Cubadak area was located in depression zone of great Sumatra fault which affected by normal faults. Geothermal this characterized the appearance hot springs type chloride-bicarbonate on Cubadak, Sawah Mudik and Talu. The manifestation temperature is about 37,1° - 74,8° C. This study purpose to recontruct model subsurface geothermal system based MT data. Model 1-D processed apply Bostic...

The goal of this paper is twofold. On the one hand, we introduce a quasi-homogeneous version classical ideal MHD system and study its well-posedness in critical Besov spaces Bp,rs(Rd), d≥2, with 11+d∕p r∈[1,+∞], or s=1+d∕p r=1. A key ingredient reformulation via so-called Elsässer variables. other give rigorous justification models, both dissipative cases: when...

1.3 MAKING A MEASUREMENT ........................................................................................................................................... 1.3.1 PRINCIPLES...............................................................................................................................................................4 1.3.2 SOIL RESISTIVITY TESTING PROCEDURE GUIDELINES ......

An integrated surface geophysical pilot study at the Texas A&M University Brazos River Hydrologic Field Research Site (BRHFRS), College Station, Texas, was done to determine the effectiveness of methods for defining the hydrostratigraphic framework and hydrogeologic properties for a ground-water availability model. Time-domain electromagnetic (TDEM) soundings and direct-current (2D–DC) resistiv...

We study the Kondo effect due to the nonmagnetic impurity, e.g., Zn, in high-Tc cuprates based on the spin-change separated state. In the optimal or overdoped case with the Kondo screening, the residual resistivity is dominated by the spinons while the T-dependent part determined by the holons. This gives ρ(T ) = 4h̄ e2 nimp. 1−x + αT x (x: hole concentration,nimp.: impurity concentration, α: co...

Experimental evidence has made it clear that the size of an object can have an effect on its properties. The electrical resistivity of a thin film will become larger as the thickness of that film decreases in size. Furthermore, the electrical resistivity will also increase as the temperature increases. To help understand these relationships, a model is presented, and equations are obtained to h...

We present resistivity measurements of Mott insulator NiS2 single crystals after heat treatment. We find a strong increase of the low temperature resistivity that relaxes back towards the pristine behaviour over several days with a time constant of 45 h at room temperature. The low temperature resistivity has previously been shown to be dominated by surface conduction [1]. Consequently, the cha...