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Rung-singlet phase of the S=(1)/(2) two-leg spin-ladder with four-spin cyclic exchange

Schmidt KP (2003)

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Publication Status: Published

Publication Type: Journal article

Publication year: 2003

Journal

Publisher: AMER PHYSICAL SOC

Book Volume: 67

Journal Issue: 18

DOI: 10.1103/PhysRevB.67.184413

Abstract

Using continuous unitary transformations (CUTs) we calculate the one-triplet gap for the antiferromagnetic S = 1/2 two-leg spin ladder with additional four-spin exchange interactions in a high order series expansion about the limit of isolated rungs. By applying an efficient extrapolation technique we calculate the transition line between the rung-singlet phase and a spontaneously dimerized phase with dimers on the legs. Using this extrapolation technique we are able to analyze the crossover from strong rung coupling to weakly coupled chains.

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How to cite

APA:

Schmidt, K.P. (2003). Rung-singlet phase of the S=(1)/(2) two-leg spin-ladder with four-spin cyclic exchange. Physical Review B, 67(18). https://doi.org/10.1103/PhysRevB.67.184413

MLA:

Schmidt, Kai Phillip. "Rung-singlet phase of the S=(1)/(2) two-leg spin-ladder with four-spin cyclic exchange." Physical Review B 67.18 (2003).

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