Activities
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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.