Experimental study of thermoelectricity in superconducting indium

Harlingen, D. J. Van; Heidel, D.; Garland, J. C.

doi:10.1103/physrevb.21.1842

Cited by 66 publications

(66 citation statements)

References 15 publications

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“…Ref. [31]). Note that if both arms were of the same material, the thermoelectric response in the two arms would give counter-flow in opposite directions around the loop and cancel.…”

Section: B Thermoelectrically Generated Magnetic Fluxmentioning

confidence: 99%

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Large thermoelectric effects in unconventional superconductors

Löfwander

Fogelström

2004

Phys. Rev. B

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We present analytic and numerical results for the thermoelectric effect in unconventional superconductors with a dilute random distribution of impurities, each scattering isotropically but with a phase shift intermediate between the Born and unitary limits. The thermoelectric response function has a linear temperature dependence at low temperatures, with a slope that depends on the impurity concentration and phase shift. Although the thermoelectric effect vanishes identically in the strict Born and unitary limits, even a small deviation of the phase shift from these limits leads to a large response, especially in clean systems. We also discuss possibilities of measuring counter-flowing supercurrents in a SQUID-setup. The non-quantized thermoelectrically induced flux can easily be of the order of a percent of the flux quantum in clean systems at 4 He temperatures.

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“…Ref. [31]). Note that if both arms were of the same material, the thermoelectric response in the two arms would give counter-flow in opposite directions around the loop and cancel.…”

Section: B Thermoelectrically Generated Magnetic Fluxmentioning

confidence: 99%

“…as a thermally induced magnetic flux in a ring setup. 27,28,29,30,31 (2) At low temperatures T γ, η(T ) scales linearly with temperature, with a non-universal slope that grows large in clean systems.…”

Section: Introductionmentioning

confidence: 99%

Large thermoelectric effects in unconventional superconductors

Löfwander

Fogelström

2004

Phys. Rev. B

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“…Although the first experiment performed by Zavaritsky 3 is in a rather good agreement with the existing theory, further experiments (see e.g. 4,5 ) exhibit temperature-dependent magnetic fluxes five order of magnitude larger than is predicted by the theory 2 . A possibility to observe large thermoelectric fluxes is discussed in 6 and is related to the phonon drag effect near the contact of the two superconductors with different values of superconducting gap.…”

Section: 2)mentioning

confidence: 60%

Thermoelectric effects in superconducting nanostructures

2006

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We study thermoelectric effects in superconducting nanobridges and demonstrate that the magnitude of these effects can be comparable or even larger than that for a macroscopic circuit. It is shown that a large gradient of the electron temperature can be realistically created on nanoscale and masking effects of spurious magnetic fields are minimal in nanostructures. For these reasons nanodevices are favorable for studying the thermoelectric effect in superconductors.

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“…Thus, EN = (I/e) grad/~ has the meaning of an effective electric field acting on the normal electrons. Using Onsager's relation (5), one may write the kinetic equation in full vectorial form as follows: q = K (-grad T) + oaTEN + (T/e)~ps div js jN = ira (-grad T) + trEN + YPs div js (4c) /2 =/~ps(-grad T) + e3,psEN + (1/e)~" div js…”

Section: Lik(ps)= Lkj(ps)mentioning

confidence: 99%

Phenomenological theory of dissipation in a superconductor

Schmid

1980

J Low Temp Phys

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Interest in nonequilibrium superconductivity in recent years has led to the discovery of numerous relaxation processes characteristic of superconductors. On the basis of the thermodynamic theory of irreversible processes, a systematic account is given of the transport coefficients and relaxation times of a superconductor. KINETIC EQUATIONSIn the past ten years, numerous relaxation processes characteristic of a superconductor have been discovered and discussed. Various relaxation times and transport coefficient have been measured in experiments and investigated in theoretical calculations. In this article, I wish to show how one can order systematically these relaxation processes and their transport coefficient on the basis of the thermodynamic theory of irreversible pro-1 cesses.For the case where the superfluid as well as the normal fluid may move without dissipation, Khalatnikov 2 was the first to elaborate on such a theory. In a superconductor, however, the normal fluid experiences friction with the lattice, which makes it necessary to introduce modifications.~ In addition, the superfluid momentum may be quite large.In the case of interest here, energy, particle number, and superfluid momentum are conserved quantities. This means that the thermodynamic properties of the system can be expressed formally by the following relation:

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Experimental study of thermoelectricity in superconducting indium

Cited by 66 publications

References 15 publications

Large thermoelectric effects in unconventional superconductors

Large thermoelectric effects in unconventional superconductors

Thermoelectric effects in superconducting nanostructures

Phenomenological theory of dissipation in a superconductor

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