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Article
Open AccessIon irradiation effects on conduction in single-wall carbon nanotube networks
We have measured how irradiation by Ar+ and N+ ions modifies electronic conduction in single-wall carbon nanotube (SWNT) networks, finding dramatically different effects for different thicknesses. For very thin t...
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Article
High‐pressure μSR studies of ferro‐ and antiferromagnetic metals
High‐pressure μSR experiments on ferromagnetic nickel and \alpha‐iron and antiferromagnetic chromium are reported. In Ni above 260 K BFermi was found to be proportional to the saturation magnetization, whereas at...
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Chapter and Conference Paper
Thermopower and Raman Studies of Zn-substituted Y-123
We have measured the thermopower and Raman spectra of YBa2(Cu1−xZnx)3Oy for 0 ≤ x ≤ 0.03 and 6.97 ≤ y ≤ 6.44. The room temperature thermopower rises strongly with decreasing y, but it shows little variation with ...
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Chapter and Conference Paper
A Microscopic Picture for Very High Conductivities in Polymers
A survey of experimental data on conductivity in ‘new’ polyacetylene is used to suggest a microscopic picture that gives a good account of the conductivity temperature dependence (including the peak sometimes ...
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Chapter and Conference Paper
Implications of the Linear Thermopower of New Polyacetylene
We discuss the nearly linear thermopower observed experimentally in new polyacetylene. This surprisingly simple behaviour (which is closer to the ideal ‘linear’ metallic diffusion thermopower than that observe...
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Article
Temperature dependence of magnetovolume for Ni-Cr alloys near the critical composition for magnetism
Measurements of the low-temperature thermal expansion coefficient, α, of Ni-Cr alloys close to the critical concentration, x c, for the ferromagnetic regime may be represented in the form α= A+BT+CT 3. The value ...
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Article
Thermoelectric power and electron–phonon enhancement in YBa2Cu3O7–δ
The recent discovery of high-temperature oxide superconductors1–4 has generated enormous interest both among physicists and, because of their obvious technological importance, in the wider community. One of the ...
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Chapter and Conference Paper
Electronic Transport in Low-Conductivity Metals and Comparison with Highly Conducting Polymers
We review the observed conductivity and thermopower behaviour in low-conductivity metals, and mention possible analogies with electronic transport in highly conducting polymers. As the electronic mean free pat...
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Article
Effect of localized spin fluctuations on transport properties in the one-band Wolff model
Fischer's calculations of the electrical resistivity, thermal resistivity, and thermopower of dilute alloys with nearly magnetic impurities are extended, using the one-band Wolff model, to the case where magne...
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Article
Transition temperature, specific heat, and dc Josephson effect for induced superconducting Kondo alloys
We calculate properties of Kondo alloys in which superconductivity is induced by the proximity effect, taking account of the energy dependence as well as the temperature dependence of pair-breaking, using the ...
