Spin Polarons in Two-Dimensional Systems |
| J.A. Morkowski Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland |
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| The problem of motion of holes on a square lattice of antiferromagnetically ordered spins is considered. An overview of the theory of hole dynamics in the antiferromagnetic background is presented. Motion of a single hole is rather well understood both by numerical and analytical methods. For small but finite concentration of holes a treatment analogous to the standard polaron theory is discussed starting with an exact mapping of the t-J Hamiltonian into holon and pseudospin variables. |
| DOI: 10.12693/APhysPolA.97.101 PACS numbers: 71.27.+a, 72.10.Di, 74.20.Mn |