Quantum materials are at the forefront of condensed matter physics due to the emergence of novel physical properties and rich quantum phenomena associated with the intimated interplay among spin, charge, orbital, and lattice degrees of freedom. As one of the fundamental parameters governing the states of matter, high pressure has been widely used to explore various distinct structural and/or electronic phases that are inaccessible at ambient pressure. The application of high pressure can thus expand substantially the phase space of condensed matters and offers more opportunities to discover novel quantum materials and phenomena. The recent discovery of near-room-temperature superconductivity in the lanthanum superhydrides represents one of the most celebrated examples. In addition, unconventional magnetism-mediated superconductivity also emerges frequently near the pressure-driven magnetic quantum critical point in strongly correlated electron systems. In this talk, I will first discuss some general guidelines of high-pressure study on quantum materials and introduce commonly used high-pressure techniques for low-temperature measurements. In the main part, I will present our recent progresses in regulation of quantum materials and exploration of new superconductors under high-pressure extreme conditions [1-4].

[1] Z. Y. Liu, Q. X. Dong, P. T. Yang, et al., Phys. Rev. Lett. 128, 187001 (2022)
[2] P. T. Yang, Z. Y. Liu, K. Y. Chen, et al., Nature Comm. 13, 2975 (2022)
[3] F. Hong, P. F. Shan, L. X. Yang, et al., Mater. Today Phys. 22, 100596 (2022)
[4] G. Wang, N. N. Wang, X. L. Shen, et al., Phys. Rev. X 14, 011040 (2024)
 

Superconductivity,high pressure measurement,quantum materials