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Magneto Thermal Coupling in Solid State Transport
Başlık:
Magneto Thermal Coupling in Solid State Transport
Yazar:
Prakash, Arati, author.
ISBN:
9780438097087
Yazar Ek Girişi:
Fiziksel Tanımlama:
1 electronic resource (150 pages)
Genel Not:
Source: Dissertation Abstracts International, Volume: 79-11(E), Section: B.
Advisors: Joseph Heremans.
Özet:
This dissertation encapsulates three primary studies in an effort to elucidate, via a series of experiments, a more complete understanding of the fundamental physics of electron spin-heat interactions.
In the first section, we present evidence for the role of magnon-to-phonon energy relaxation as a driving force for the spin Seebeck effect (SSE) at short lengthscales, in addition to the accepted magnon spin diffusion process at longer lengthscales. Temperature-dependent spin-Seebeck effect data on Pt
In the second section, we demonstrate that antiferromagnetic NiO thin films can transmit magnons and give rise to nonzero spin Seebeck effects without a need for high magnetic fields. We report temperature-dependent spin-Seebeck measurements on Pt
In the third section, we examine substrate-to-film interfacial phonon drag on typical spin Seebeck heterostructures, in particular studying the effect of ferromagnetic magnons on the existing phonon-electron drag dynamics of the heterostructures. To explore this concept, we compare the thermopower of Pt films grown on ferrimagnetic YIG to that grown on paramagnetic GGG. To isolate the hypothetical drag contribution from the magnons in YIG into the adjacent Pt film, we design a thermocouple device using a hybrid sample with half Pt
Notlar:
School code: 0168
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Yer Numarası | Demirbaş Numarası | Shelf Location | Lokasyon / Statüsü / İade Tarihi |
---|---|---|---|
XX(696380.1) | 696380-1001 | Proquest E-Tez Koleksiyonu | Arıyor... |
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