Investigates thermoelectric responses in nickelate films, revealing distinct low-temperature behaviors.
• Thermoelectric effect is studied in thin films of rare-earth perovskite nickelates. • Contrasting low-temperature thermoelectric responses are observed in (La/Nd/Sm)NiO 3 . • Insulating SmNiO 3 films show enhanced phonon-drag thermopower. • Similar metallic diffusion thermopower is observed above 200 K in all films. • Polaron transport and percolation transition explain the thermoelectric anomalies.
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Stupakov et al. (2026) studied this question.
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