Spin Polarons in Antiferromagnetic Planes

• Authors: J. Morkowski
• Languages of publication: EN

Abstracts

EN

In the lecture the theory of spin polarons is reviewed on the basis of its analogy with the theory of lattice polarons. The energy dispersion curve for a single polaron in a two-dimensional antiferromagnetic square lattice is calculated in the self-consistent Born approximation. Also in self-consistent Born approximation the energy of a pair of interacting spin polarons is calculated. The results of calculations for realistic values of parameters of the model lead to the conclusion that pairing of spin polarons is not a likely mechanism of superconductivity in cuprates.

Keywords

EN

71.27.+a; 72.10.Di; 74.20.Mn

Discipline

• 74.20.Mn: Nonconventional mechanisms
• 71.27.+a: Strongly correlated electron systems; heavy fermions
• 72.10.Di: Scattering by phonons, magnons, and other nonlocalized excitations(see also 71.45.-d Collective effects in electronic structure of bulk materials)

• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 4
• Pages: 397-408

Dates

published

2007-04

received

2006-09-14

Contributors

author

J. Morkowski

• Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland

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Identifiers

DOI

10.12693/APhysPolA.111.397