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Resonant magnetic mode in superconducting 2-leg ladders

D. Poilblanc·E. Orignac·S. R. White·S. Capponi
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Abstract

The spin dynamics of a doped 2-leg spin ladder is investigated by numerical techniques. We show that a hole pair-magnon boundstate evolves at finite hole doping into a sharp magnetic excitation below the two-particle continuum. This is supported by a field theory argument based on a SO(6)-symmetric ladder. Similarities and differences with the resonant mode of the high-T$_c$ cuprates are discussed.

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D. Poilblanc, E. Orignac, S. R. White, S. Capponi. 2004-01-31. Resonant magnetic mode in superconducting 2-leg ladders. https://doi.org/10.1103/physrevb.69.220406

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