Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device. / Machon, Peter; Eschrig, Matthias; Belzig, Wolfgang.

In: New Journal of Physics, Vol. 16, 073002, 02.07.2014.

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Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device. / Machon, Peter; Eschrig, Matthias; Belzig, Wolfgang.

In: New Journal of Physics, Vol. 16, 073002, 02.07.2014.

Research output: Contribution to journalArticlepeer-review

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Machon, Peter ; Eschrig, Matthias ; Belzig, Wolfgang. / Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device. In: New Journal of Physics. 2014 ; Vol. 16.

BibTeX

@article{f33b790e86a44d5391051719c09a2f4d,
title = "Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device",
abstract = "The usually negligibly small thermoelectric effects in superconductingheterostructures can be boosted dramatically due to the simultaneous effect of spin splitting and spin filtering. Building on an idea of our earlier work (Machon et al 2013 Phys. Rev. Lett. 110 047002), we propose realistic mesoscopic setups to observe thermoelectric effects in superconductor heterostructures with ferromagnetic interfaces or terminals. We focus on the Seebeck effect being a direct measure of the local thermoelectric response and nd that a thermopower of the order of ~250 μV/K can be achieved in a transistor-like structure, in which a third terminal allows to drain the thermal current. A measurement of the thermopower can furthermore be used to determine quantitatively the spin-dependent interface parameters that induce the spin splitting. For applications in nanoscale cooling we discuss the figure of merit for which we find values exceeding 1.5 for temperatures of ≤ 1K.",
author = "Peter Machon and Matthias Eschrig and Wolfgang Belzig",
year = "2014",
month = jul,
day = "2",
doi = "10.1088/1367-2630/16/7/073002",
language = "English",
volume = "16",
journal = "New Journal of Physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",

}

RIS

TY - JOUR

T1 - Giant thermoelectric effects in a proximity-coupled superconductor-ferromagnet device

AU - Machon, Peter

AU - Eschrig, Matthias

AU - Belzig, Wolfgang

PY - 2014/7/2

Y1 - 2014/7/2

N2 - The usually negligibly small thermoelectric effects in superconductingheterostructures can be boosted dramatically due to the simultaneous effect of spin splitting and spin filtering. Building on an idea of our earlier work (Machon et al 2013 Phys. Rev. Lett. 110 047002), we propose realistic mesoscopic setups to observe thermoelectric effects in superconductor heterostructures with ferromagnetic interfaces or terminals. We focus on the Seebeck effect being a direct measure of the local thermoelectric response and nd that a thermopower of the order of ~250 μV/K can be achieved in a transistor-like structure, in which a third terminal allows to drain the thermal current. A measurement of the thermopower can furthermore be used to determine quantitatively the spin-dependent interface parameters that induce the spin splitting. For applications in nanoscale cooling we discuss the figure of merit for which we find values exceeding 1.5 for temperatures of ≤ 1K.

AB - The usually negligibly small thermoelectric effects in superconductingheterostructures can be boosted dramatically due to the simultaneous effect of spin splitting and spin filtering. Building on an idea of our earlier work (Machon et al 2013 Phys. Rev. Lett. 110 047002), we propose realistic mesoscopic setups to observe thermoelectric effects in superconductor heterostructures with ferromagnetic interfaces or terminals. We focus on the Seebeck effect being a direct measure of the local thermoelectric response and nd that a thermopower of the order of ~250 μV/K can be achieved in a transistor-like structure, in which a third terminal allows to drain the thermal current. A measurement of the thermopower can furthermore be used to determine quantitatively the spin-dependent interface parameters that induce the spin splitting. For applications in nanoscale cooling we discuss the figure of merit for which we find values exceeding 1.5 for temperatures of ≤ 1K.

U2 - 10.1088/1367-2630/16/7/073002

DO - 10.1088/1367-2630/16/7/073002

M3 - Article

VL - 16

JO - New Journal of Physics

JF - New Journal of Physics

SN - 1367-2630

M1 - 073002

ER -