New evidence of formation of magnetic polaron states in semimetals GdAs and GdP

摘要: Abstract Some new magnetic polaron effects were found for nonstoichiometric GdAs and GdP by measuring their electrical resistivities, susceptibilities specific heats as functions of temperature from 1.6 K ≤ T 300 K. The dependence the resistivities shows clear defferences between stoichiometirc nonstoiciometric GaAs samples. Comparing with stoichiometric samples, nonstoichiometirc show much larger susceptibility values at low temperatures smaller entropy values. These anomalous properties are explained trapped polaron.