Wavelength Dependence of Pumping a Superconductor

ORAL

Abstract

Experiment [E. Casandruc et al] has shown transient enhanced superconductivity in LBCO when pumped by ultrafast pulses.This provides a new way to control the propertities of high Tc supercondoctors and explore non-equilibrium phenomenon. Here we explore the effects of pumping the cuprates at different wavelengths. The model is a multi-band Hubbard model (including apical oxygen sites), which we pump with an ultrafast gaussian-pulse to study its time evolution using exact diagonalization (ED). The results show that holes are pumped from the CuO2 plane into the apical oxygens at characteristic optical wavelengths.

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Presenters

  • Ta Tang

    • Applied Physics, Stanford

Authors

  • Ta Tang

    • Applied Physics, Stanford

  • Thomas Devereaux

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • Physics, Stanford University
    • SLAC and Stanford University
    • Institute for Materials and Energy Science, Stanford
    • SIMES, SLAC National Accelerator Lab
    • SLAC National Accelerator Laboratory and Stanford University, Stanford Institute for Materials and Energy Sciences
    • SLAC, Stanford
    • SIMES, SLAC, and Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory and Stanford University

  • Brian Moritz

    • Stanford University
    • Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory
    • SLAC National Accelerator Laboratory
    • SLAC and Stanford University
    • Institute for Materials and Energy Science, Stanford
    • SSRL Materials Science Division, SLAC National Accelerator Laboratory and Stanford University