Hole Dynamics in a 2D Striped-Ordered Quantum Antiferromagnet

ORAL

Abstract

We study the single hole motion in a $2D$ quantum antiferromagnet in a stripe background within the $t-J$ model, using an additional ferromagnetic term along the domain walls to stabilize the stripes. The spin wave approximation is used to linearize the Hamiltonian and we calculate the different flavors of spin-wave dispersions and hole propagators by means of a self consistent perturbation scheme within the non-crossing approximation. The hole spectral functions will be compared to the experimental ARPES data available for $La_{2-x}Sr_{x}CuO_{4}$ and concentration of $x=\frac{1}{8}$.

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Authors

  • Satyaki Kar

    MARTECH \& Physics Department, FSU, Tallahassee, FL

  • Efstratios Manousakis

    MARTECH \& Physics Department, FSU, Tallahassee, FL \& University of Athens, Greece, Department of Physics, Florida State University, USA, and Department of Physics, University of Athens, Greece, MARTECH, Dept. of Physics, Florida State University and University of Athens, Greece, Florida State University, MARTECH and Physics Department, FSU, Tallahassee, FL and University of Athens, Greece, Physics Department, Florida State University, USA, and Physics Department, University of Athens, Greece