Results 11 to 20 of about 9,305 (240)
Large Seebeck effect by charge-mobility engineering. [PDF]
Nat Commun, 2015 AbstractThe Seebeck effect describes the generation of an electric potential in a conducting solid exposed to a temperature gradient. In most cases, it is dominated by an energy-dependent electronic density of states at the Fermi level, in line with the prevalent efforts towards superior thermoelectrics through the engineering of electronic structure ...
Sun P +7 more
europepmc +8 more sources
Seebeck effect in nanomagnets [PDF]
Journal of Physics: Condensed Matter, 2021 Abstract We present a theory of the Seebeck effect in nanomagnets with dimensions smaller than the spin diffusion length, showing that the spin accumulation generated by a temperature gradient strongly affects the thermopower. We also identify a correction arising from the transverse temperature gradient induced by the anomalous ...
Dmitry V Fedorov +4 more
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Evidence for a Magnetic Seebeck Effect [PDF]
Physical Review Letters, 2013 The irreversible thermodynamics of a continuous medium with magnetic dipoles predicts that a temperature gradient in the presence of magnetisation waves induces a magnetic induction field, which is the magnetic analog of the Seebeck effect. This thermal gradient modulates the precession and relaxation.
Brechet SD +4 more
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Antiferromagnetic Spin Seebeck Effect [PDF]
Physical Review Letters, 2016 We report on the observation of the spin Seebeck effect in antiferromagnetic MnF$_2$. A device scale on-chip heater is deposited on a bilayer of Pt (4 nm)/MnF$_2$ (110) (30 nm) grown by molecular beam epitaxy on a MgF$_2$ (110) substrate. Using Pt as a spin detector layer it is possible to measure thermally generated spin current from MnF$_2$ through ...
Wu, Stephen M +8 more
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Picosecond Spin Seebeck Effect [PDF]
Physical Review Letters, 2017 We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect driven by an interfacial temperature difference between itinerant electrons and magnons. The measured time-evolution of spin accumulation induced by laser-excitation indicates transfer of angular momentum across Au/Y$_3$Fe$_5$O$_{12}$ and Cu/Y$_3$Fe ...
Kimling, Johannes +7 more
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Seebeck effect in magnetic tunnel junctions [PDF]
Nature Materials, 2011 Creating temperature gradients in magnetic nanostructures has resulted in a new research direction, i.e., the combination of magneto- and thermoelectric effects. Here, we demonstrate the observation of one important effect of this class: the magneto-Seebeck effect.
Walter, Marvin +13 more
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Magneto-Seebeck effect in bismuth [PDF]
Physical Review B, 2022 Thermoelectricity was discovered almost two centuries ago in bismuth. The large and negative Seebeck coefficient of this semimetal remains almost flat between 300 K and 100 K. This striking feature can be understood by considering the ratio of electron and hole mobilities and the evolution of their equal densities with temperature.
Spathelf, Felix +2 more
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On the time-dependent electrolyte Seebeck effect [PDF]
The Journal of Chemical Physics, 2021 Single-ion Soret coefficients αi characterize the tendency of ions in an electrolyte solution to move in a thermal gradient. When these coefficients differ between cations and anions, an electric field can be generated. For this so-called electrolyte Seebeck effect to occur, different thermodiffusive fluxes need to be blocked by boundaries—electrodes ...
André Luiz Sehnem, Mathijs Janssen
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Magneto-Seebeck effect in magnetic tunnel junctions with perpendicular anisotropy [PDF]
AIP Advances, 2017 As one invigorated filed of spin caloritronics combining with spin, charge and heat current, the magneto-Seebeck effect has been experimentally and theoretically studied in spin tunneling thin films and nanostructures.
Keyu Ning +12 more
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Topology dependence of skyrmion Seebeck and skyrmion Nernst effect [PDF]
Scientific Reports, 2022 We explore the dynamics of skyrmions with various topological charges induced by a temperature gradient in an ultra-thin insulating magnetic film. Combining atomistic spin simulations and analytical calculations we find a topology-dependent skyrmion ...
Markus Weißenhofer, Ulrich Nowak
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