Fig. 3: Magnetic field (H) dependence of the thermal Hall κxy and the Hall Lorenz number Lxy of NdAlSi.
From: Abnormally enhanced Hall Lorenz number in the magnetic Weyl semimetal NdAlSi
Data were measured in sample #1 with the temperature gradient ∇T and the H-field applied along the a and c axes, respectively. Top panels: Experimental κxy(H) (solid circles) compared with the electronic contribution \({\kappa }_{xy}^{{{{\rm{WF}}}}}={L}_{0}{\sigma }_{xy}T\) (solid lines) estimated based on a valid WF law. Vertical lines mark out the metamagnetic transition field Hm and the crossover field Hp for spin polarization20. Bottom panels: The Lxy corresponding to the data shown in (a–h), plotted against H. The horizontal lines are the Sommerfeld value L0. a T = 4 K, b T = 8 K, c T = 12 K, d T = 15 K, e T = 20 K, f T = 40 K, g T = 100 K, h T = 250 K.
