Zero-temperature magnetic-field-induced phase transition between two ordered gapped phases in spin ladders with ferromagnetic legs

2005/09/30 by P. N. Bibikov
Mathematics · Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Excited state #Ferromagnetism #Field (mathematics) #Ground state #Magnetic field #Mathematics #Phase (matter) #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quantum phase transition #Singlet state #Spin (aerodynamics) #Theoretical and Computational Physics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevb.73.132402

published as Phys. Rev. B73, 132402 (2006) · 4 pages

openalex publication_date 2006/04/04 · arxiv created 2006/08/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We suggest that under an increase of magnetic field, a spin ladder with ferromagnetic legs does not pass without fail through an incommensurate phase, but possibly in a straight way turns into a fully polarized ferromagnetic phase. The spin gap remains finite at the transition point. This scenario of zero-temperature first-order phase transition is demonstrated for two special solvable spin-ladder models.

Citations

• Magnetization plateaux and jumps in a class of frustrated ladders: A simple route to a complex behaviour
• Magnetic-field-induced phase transitions in spin ladders with ferromagnetic legs
• Two-magnon Raman scattering in spin ladders with exact singlet-rung ground state