This paper investigates the metal-insulator (MI) transition in tungsten (W)-doped vanadium dioxide (VO₂). Using an ultrahigh magnetic field of 500 T, the researchers induced a metallic state in the insulating phase of W-doped VO₂. This transition is attributed to the spin Zeeman effect on the d electrons of V ions, which disrupts the vanadium dimers responsible for the insulating behavior. The results suggest that structural instability, rather than electron correlation, is the primary driving force behind the MI transition in VO₂.
