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cond-mat.mtrl-sci2025★ 1 cited
Spin-dependent anisotropic electron-phonon coupling in KTaO
Giulia Venditti, Francesco Macheda, Paolo Barone +2
KTaO (KTO) is an incipient ferroelectric, characterized by a softening of the lowest transverse optical (TO) mode with decreasing temperature. Cooper pairing in the recently di…
cond-mat.mtrl-sci2025
Large phonon-drag thermopower polarity reversal in Ba-doped KTaO3
Mohamed Nawwar, Samuel Poage, Tobias Schwaigert +6
This study reports the observation of phonon-drag thermopower polarity reversal in Ba-doped KTaO3 thin films, mediated by electron-phonon Umklapp scattering. Epitaxial films with d…