Low-Lying Energy Properties of a Frustrated Antiferromagnetic Spin-$\frac 1 2$ Ladder

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dc.creatorWang, Xiaoqun
dc.date1998-03-24
dc.date.accessioned2026-07-07T03:10:11Z
dc.date.available2026-07-07T03:10:11Z
dc.descriptionUsing the Density Matrix Renormalization Group method, we determined the phase diagram of a frustrated antiferromagnetic spin-$\frac 1 2$ ladder at zero temperature. Two spin-gapped phases, the Haldane phase and the singlet phase, are identified. A phase transition between the two phases occurs at any non-zero value of frustration coupling $J_{\times}$. On the phase boundary, the spin gap vanishes for sufficiently small $J_{\times}$. Crossing this non-gapped line, the transition is of second order, while of first order for larger $J_{\times}$. Striking frustration effects are predicted for ladder materials.
dc.description8 pages, 6 figures, Revtex
dc.identifierhttps://arxiv.org/abs/cond-mat/9803290
dc.identifierhttp://arxiv.org/abs/cond-mat/9803290
dc.identifierModern. Phys. Lett. B, 14 2000327
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28164
dc.subjectStrongly Correlated Electrons
dc.titleLow-Lying Energy Properties of a Frustrated Antiferromagnetic Spin-$\frac 1 2$ Ladder
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