Magnon-mediated binding between holes in an antiferromagnet

C. Brügger, F. Kämpfer (), M. Pepe and U.-J. Wiese

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 53, issue 4, 433-437

Abstract: The long-range forces between holes in an antiferromagnet are due to magnon exchange. The one-magnon exchange potential between two holes is proportional to cos(2 ϕ)/ r 2 where r is the distance vector of the holes and ϕ is the angle between r and an axis of the square crystal lattice. One-magnon exchange leads to bound states of holes with antiparallel spins resembling d-wave symmetry. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 12.39.Fe Chiral Lagrangians; 74.20.Mn Nonconventional mechanisms (spin fluctuations; polarons and bipolarons; resonating valence bond model; anyon mechanism; marginal Fermi liquid; Luttinger liquid; etc.); 75.30.Ds Spin waves; 75.50.Ee Antiferromagnetics (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00398-y

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