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Showing 1 to 14 of 14 for “"Hall coefficient"”.
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A Study of the Hall Coefficient in the Superconducting Ceramic Oxide Y1Ba2Cu3O7-δ
No abstract prepared.
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The effect of pressure on the resistivity and Hall coefficient of amorphous metallic alloys
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-13T14:15:22Z No. of bitstreams: 1 1983_mcneil.pdf: 2009043 bytes, checksum: 17a78b5f271dbede167bc04309ec74b8 (MD5)
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Hall effect in the superconducting and normal states in detwinned and twinned single crystals of zinc-doped YBa2Cu3O7-d
… investigated the influence of zinc doping on the Hall effect in detwinned and twinned single crystals of YBa2Cu307..o. We observed the sign reversal of the Hall effect for crystals with superconducting transition temperature (Tc) as low as 58.51 K. Below the transition temperature, the Hall …
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Pressure dependence of superconductivity in amorphous Ni x Zr 100-x alloys
… for Ni concentration of 45%. Comparison with the Hall coefficient (I) and the thermoelectric power (2) results for the same amorphous alloys leads to the conclusion that s-d hybridization nature of the d-band (Nil plays a central role in the sign reversal behaviour. Application of pressures …
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Some transport properties of the indium antimonide/nickel antimonide eutectic system
… inclusion rods of NiSb in a matrix of InSb .The Hall coefficient , electrical conductivity and magnetoresistance havebeen investigated from 77°K to 6500K, while thermo-electric power and thermalconductivity measurements have been plotted from 3200K to 590oK, on samples cutso that the directional …
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Hall effect in untwinned single-crystal superconducting YBa2Cu307-y
We measured the Hall effect in untwinned single-crystal YBa2Cu3o7_Y, a high-Tc superconductor. The crystals were grown using a technique that we invented, in which untwinned domains are produced naturally without applying stress to the sample. The Hall effect measurements were directed at …
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COMPOSITION AND PRESSURE DEPENDENT STUDY ON WEYL SEMIMETAL Mo1-xWxTe2
… of 0.9 GPa, the transverse MR is suppressed, the Hall coefficient changes sign, and superconductivity emerges, suggesting a significant reconstruction of the Fermi surface. The superconducting transition temperature (Tc) continuously increases with increasing pressure above 0.9 GPa up to 14.3 GPa. …
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New features in the phase diagrams of the cuprate high-Tc superconductors mapped using strong magnetic fields
… reveal a prominent peak feature in the inverse Hall coefficient centred at a critical hole-doping value. This peak feature is seen to remain centred at this critical hole-doping value with elevated temperature; effectively tracing out a vertical boundary line at critical hole-doping that bisects …
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Spin-Mediated Transport in Superconducting and Spin-Polarized Systems
… From measurements of the ordinary and anomalous Hall effects, the charge carrier concentration was found to increase, while the anomalous Hall coefficient decreased by nearly an order of magnitude with each sample as x→0 (∆x=0.25). Scaling of the anomalous Hall effect with longitudinal …
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High Pressure Quantum Oscillation Study of BiTeI and Bi2Te3
… calculated and there was good agreement with Hall effect measurements. The phase of the oscillations showed that both Fermi surfaces have a Berry phase of $\pi$ associated with them, consistent with theoretical predictions for a Rashba system. As pressure is applied, it was observed that the …
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Experimental consequences of mottness in high-temperature copper-oxide superconductors
… these compounds still remains one of the major challenges in condensed matter physics. In addition to the mechanism of superconductivity, understanding the properties of the normal state is a major puzzle in itself. As these materials are doped Mott insulators, the interaction between electrons …
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Electronic, optical, mechanical and thermoelectric properties of graphene
… as high carrier transport properties, quantum Hall effect at room temperature and unusual magnetic properties, graphene has applications in optoelectronic devices. Electronically, graphene is a zero bandgap semiconductor making it essential to tailor its structure for obtaining specific band …
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Thermoelectric and Charge Transport in Doped Semi-Crystalline Polymers
… another equally important parameter, the Seebeck coefficient, tends to decrease when carrier concentration and conductivity increase. Therefore, it is crucial to find a balanced point where ZT maximizes. To achieve this, it is paramount to understand charge and entropy transport as well as the …
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The Hall Effect for Probing Conjugated Polymer Charge Transport in High Carrier Density Regimes
… in these materials often proves difficult. Hall effect mea- surements, a mainstay of semiconductor characterisation in more traditional materials, provide anomalous results when used on polymers. This often leads to inaccurate claims being made off the back of erroneously interpreted Hall …