Bulletin of the American Physical Society
APS March Meeting 2018
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session R04: "Whither Pairing Correlations or Quantum Criticality driven Pseudogap in the Cuprate Superconductors?"
8:00 AM–11:00 AM,
Thursday, March 8, 2018
LACC Room: 151
Sponsoring Units: DCMP DCP
Chair: Laura Greene, Florida State Univ
Abstract: R04.00002 : Topological skyrmion pseudogap in the cuprate superconductors*
8:36 AM–9:12 AM
We consider a theory for the formation of the pseudo-gap in the underdoped region of cuprate superconductors, in which there is a large regime of fluctuations between the d-wave SC order and d-wave charge density modulations. These fluctuations involve the phase as well as the amplitude of each order parameter and can be described within an emerging SU(2) symmetry. The theory captures large part of the phenomenology of the cuprates. We will discuss experimental prediction of this theory, including the presence of collective modes and the generation of unusual topological defects in the pseudo-spin space. We will outline the differences between the SU(2) fluctuation approach to strong coupling scenarios involving the fractionalization of the electron.
*This research is funded by the ERC, under grant agreement AdG-694651-CHAMPAGNE .
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