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Thermopower of various Ni samples, as indicated. Inset: Low temperature regime.
Phonon drag thermopower of various Ni samples, as indicated, after subtraction of linear part due to electron diffusion.
vs plots of various Ni samples as indicated. Inset: Plots of coefficients and in Eq. (1) as a function of ; 100 nm is chosen for bulk-Ni.
Difference thermopower, , of various Ni samples as indicated. Inset: (a) at low temperatures. (b) FC and ZFC magnetization in a field of 50 G for as indicated.
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