Low-temperature thermoelectric power of palladium-gold alloys

Guénault, A. M.; Lawson, N. S.; Northfield, J.

doi:10.1080/13642817808246334

Cited by 8 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2. This result is in consistency with that previously reported by Guénault et al [41]. In short, no evidence of a huge thermopower with a broad maximum at a few degrees Kelvin signifying the existence of an appreciable level of magnetic impurities is found in the concentrated AuPd alloys.…”

Section: Low Temperature Thermoelectric Powerssupporting

confidence: 93%

“…For example, the value of S(4 K) changes from +0.03 µV/K for pure Au to −7.2 µV/K for the AuFe Kondo alloy containing 13 ppm of Fe [38]. In the case of the Au 100−x Pd x alloys, the low temperature thermopowers have been extensively measured by Rowland et al, [39] and Guénault et al [41] over the whole alloy series. They pointed out that the thermopower can be well described by the expression S = AT +BT 3 +CT /(T +0.2), in which the third term represents an extra contribution from Fe contamination.…”

Section: Low Temperature Thermoelectric Powersmentioning

confidence: 98%

See 1 more Smart Citation

Low-temperature electron dephasing time in AuPd revisited

Lin

Lee

Wang

2007

Physica E: Low-dimensional Systems and Nanostructures

View full text Add to dashboard Cite

Ever since the first discoveries of the quantum-interference transport in mesoscopic systems, the electron dephasing times, $\tau_\phi$, in the concentrated AuPd alloys have been extensively measured. The samples were made from different sources with different compositions, prepared by different deposition methods, and various geometries (1D narrow wires, 2D thin films, and 3D thickfilms) were studied. Surprisingly, the low-temperature behavior of $\tau_\phi$ inferred by different groups over two decades reveals a systematic correlation with the level of disorder of the sample. At low temperatures, where $\tau_\phi$ is (nearly) independent of temperature, a scaling $\tau_\phi^{\rm max} \propto D^{-\alpha}$ is found, where $tau_\phi^{\rm max}$ is the maximum value of $\tau_\phi$ measured in the experiment, $D$ is the electron diffusion constant, and the exponent $\alpha$ is close to or slightly larger than 1. We address this nontrivial scaling behavior and suggest that the most possible origin for this unusual dephasing is due to dynamical structure defects, while other theoretical explanations may not be totally ruled out.Comment: to appear in Physica E, Proceedings for the International Seminar and Workshop "Quantum Coherence, Noise, and Decoherence in Nanostructures", 15-26 May 2006, Dresde

show abstract

Section: Low Temperature Thermoelectric Powerssupporting

confidence: 93%