External Tuning of Metal-Insulator Transitions

Aim of this Tutorial: Revision of the Mott-Hubbard model and charge-transfer insulators, Experimental techniques to determine phase transitions, External tuning of quantum materials,...

Manuscripts to be discussed:

Obradors et al., Pressure dependence of the metal-insulator transition in the charge-transfer oxides RNi0_3 (R =Pr,Nd,Nd_0,7La_0,3)

Torrance et al., Systematic study of insulator-metal transitions in perovskites RNi0_3 (R =Pr, Nd, Sm, Eu) due to closing of charge-transfer gap

• What kind of experiments were performed?
• How does the metal-insulator transition react on external stimuli? What trend can one observe?
• What is the microscopic origin?