(n=1,2)

Magnetic topological insulators with nontrivial topological band structure and broken time-reveal symmetry provide an ideal platform for exploring exotic quantum phenomena, such as quantum anomalous Hall effect (QAHE), axion insulator state and Majarona mode. Recently, MnBi₂Te₄ was discovered as the first intrinsic antiferromagnetic topological insulator. However, due to the large antiferromagnetic interlayer coupling, strong external magnetic field is needed to fully polarize the magnetic moment to achieve QAHE. By inserting one or two Bi₂Te₃ layers into the adjacent MnBi₂Te₄ septuple layers, the antiferromagnetic interlayer coupling can be greatly reduced. Using hydrostatic pressure to further modulate the interlayer interaction, we study the transport properties of the MnBi₂Te₄(Bi₂Te₃)_n (n=1,2) bulk crystals and investigate the pressure tuned interlayer coupling in detail.