Magnetism and Superconductivity in the Pseudogap Phase of Underdoped Cuprates

10th International Conference on Materials and Mechanisms of Superconductivity

James, A.J.A.^1 ; Konik, R.M.^1 ; Huang, K.^2 ; Chen, W.-Q.^2,3 ; Rice, T.M.^1,2,4 ; Zhang, F.C.^2

Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, NY 11973, United States^1

Center for Theoretical and Computational Physics, Department of Physics, University of Hong Kong, Hong Kong, Hong Kong^2

Department of Physics, South University of Science and Technology of China, Shenzhen, Guangdong, China^3

Institut fuer Theoretische Physik, ETH Zurich, CH-8093 Zurich, Switzerland^4

关键词: Dimensional systems;    Magnetic excitations;    Mott localization;    Pseudogap phase;    Quasiparticles;    Single particle;    Underdoped cuprates;    Weak couplings;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/449/1/012006/pdf
DOI  :  10.1088/1742-6596/449/1/012006

来源: IOP

【 摘 要 】

The theoretical description of the anomalous properties of the pseudogap phase in the underdoped region of the cuprate phase diagram lags behind the progress in spectroscopic and other experiments. A phenomenological ansatz, based on analogies to the approach to Mott localization at weak coupling in lower dimensional systems, for the single particle propagator in the pseudogap phase has been proposed by Yang, Rice and Zhang. This ansatz has had success in describing a range of experiments, especially spectroscopies such as ARPES and aspects of STM results. Recently this approach has been extended to successfully interpret the magnetic excitations in the spin response response. In the charge channel, d-wave cooperon excitations accompany the opening of the pseudogap and they generate an additional d-wave attraction for quasiparticles at the remnant nodal Fermi surfaces.