1. robust d-wave superconductivity of doped mott insulators

Donna Sheng

California State University, USA

19 April 2022 Tue 10 am

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

Understanding the mechanism of high-Tc superconductivity is one of the grand challenges for condensed matter physics. In this talk, I will present density matrix renormalization group studies of an extended t-J model, which reveal the possible superconductivity states in the doped Mott insulator. In particular, we will demonstrate  a quantum phase diagram including three phases: a stripe charge density wave phase, a uniform superconducting phase, and a superconducting phase coexistent with a weak charge stripe order. These findings reveal that enhanced charge and spin fluctuations with optimal doping are able to produce robust d-wave superconductivity in doped Mott insulators, providing a foundation for connecting theories of superconductivity to models of strongly correlated systems.