Light-Enhanced Spin Fluctuations and <i>d</i>-Wave Superconductivity at a Phase Boundary
ORAL
Abstract
Time-domain techniques have shown the potential of photo-manipulating existing orders and inducing new states of matter in strongly correlated materials. Using time-resolved exact diagonalization, we perform numerical studies of pump dynamics in a Mott-Peierls system with competing charge and spin density waves. A light-enhanced d-wave superconductivity is observed when the system resides near a quantum phase boundary. By examining the evolution of spin, charge and superconducting susceptibilities, we show that a sub-dominant state in equilibrium can be stabilized by photomanipulating charge order to allow superconductivity to appear and dominate. This work provides an interpretation of light-induced superconductivity from the perspective of order competition, and offers a promising approach for designing novel emergent states out of equilibrium.
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Presenters
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Yao Wang
- Department of Applied Physics, Stanford University
- Harvard Univ
- Physics, Harvard University
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory