Fig. 4: Thermoelectric transport across the Anderson localisation−delocalisation transition.
From: Anderson transition in stoichiometric Fe2VAl: high thermoelectric performance from impurity bands
a–c Evidence from electrical resistivity, thermopower and Hall effect measurements for charge localisation and variable-range hopping behaviour in as-cast and furnace-cooled Fe2VAl at low temperatures. d Temperature-dependent resistivity of Fe2VAl with increasing quenching temperature. Dashed line denotes the Ioffe-Regel-Mott limit in Fe2VAl. e Sign reversal of the temperature-dependent thermopower with increasing quenching temperature. Inset shows the slope of S(T) at low temperatures for the different samples. Solid lines are guides to the eye.
