Skew scattering dominated anomalous Nernst effect in La1-xNaxMnO3.

Authors :: Ghosh, Arup
Das, Rajasree
Mahendiran, Ramanathan
Source :: Journal of Applied Physics; 2019, Vol. 125 Issue 15, pN.PAG-N.PAG, 6p, 5 Graphs
Publication Year :: 2019
Abstract: We report the anomalous Nernst effect (ANE) in bulk La<subscript>1-x</subscript>Na<subscript>x</subscript>MnO<subscript>3</subscript> (x = 0.02, 0.05, 0.1, and 0.3) samples whose ferromagnetic Curie temperature (T<subscript>C</subscript>) is tunable from 251 K to 310 K. The ANE voltage abruptly increases at T<subscript>C</subscript> and decreases for T < T<subscript>C</subscript>. The maximum value of ANE is achieved for x = 0.1, which shows the highest magnetization value in the series. The temperature dependent ANE (T < T<subscript>C</subscript>) is analyzed with the help of dc resistivity and longitudinal thermopower data using Mott's relation, and it is found that the ANE in La<subscript>1-x</subscript>Na<subscript>x</subscript>MnO<subscript>3</subscript> is dominated by skew scattering. [ABSTRACT FROM AUTHOR]