Magnetic field induced phase transitions in spin ladders with ferromagnetic legs
T. Vekua, G. I. Japaridze, and H.-J. Mikeska
TL;DR
This paper investigates how magnetic fields induce phase transitions in spin ladders with ferromagnetic legs, combining bosonization, strong coupling, and spin wave methods to analyze the phase diagram.
Contribution
It introduces a comprehensive analysis of magnetic field effects on ferromagnetic-leg spin ladders, integrating multiple theoretical approaches for phase characterization.
Findings
Identification of two phase transitions induced by magnetic fields
Establishment of phase universality across different theoretical methods
Detailed phase diagram of ferromagnetic-leg spin ladders under magnetic fields
Abstract
We study the phase diagram of spin ladders with ferromagnetic legs under the influence of a symmetry breaking magnetic field in the weak coupling effective field theory by bosonization. For antiferromagnetic interleg coupling we identify two phase transitions introduced by the external magnetic field. In order to establish the universality of the phases we supplement the bosonization approach by results from a strong coupling (rung) expansion and from spin wave analysis.
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