Physics Letters A

0- and 2/3-magnetization plateaus in three-leg antiferromagnetic Heisenberg spin-1/2 ladders with leg-dimerization

Ruixue Li, Shuling Wang, Yun Ni, K.L. Yao, Hua‐Hua Fu

Published Feb 1, 2014• 7 citations

DOI: 10.1016/j.physleta.2014.01.049

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Physics Letters A

0- and 2/3-magnetization plateaus in three-leg antiferromagnetic Heisenberg spin-1/2 ladders with leg-dimerization

Ruixue Li, Shuling Wang, Yun Ni, K.L. Yao, Hua‐Hua Fu

Published Feb 1, 2014• 7 citations

Publisher

DOI: 10.1016/j.physleta.2014.01.049

Related papers

Quantum phase transition and magnetic plateau in three-leg antiferromagnetic Heisenberg spin ladder with unequal J1–J2–J1 legs

Shuling Wang, Sicong Zhu, Yun Ni +3 more

Journal of Magnetism and Magnetic MaterialsSep 1, 20154 citations

The magnetic properties of spin-1/2 two-leg ladders with dimerized legs and trimerized modulation of rung exchange

M. Shahri Naseri, S. Mahdavifar

Physica A Statistical Mechanics and its ApplicationsJan 18, 20179 citations

Magnetization plateaus in dimerized spin-ladder arrays

D. C. Cabra, Marcelo D. Grynberg

We investigate the ground-state magnetization plateaus appearing in spin- $\frac{1}{2}$ two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using both Abelian bosonization and Lanczos methods we find that the system yields rather unusual plateaus and exhibits massive and massless phases for specific choices or ``tuning'' of exchange interactions. The relevance of this behavior in the study of ${\mathrm{NH}}_{4}{\mathrm{CuCl}}_{3}$ is discussed.We investigate the ground-state magnetization plateaus appearing in spin-$\frac{1}{2}$ two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using both Abelian bosonization and Lanczos methods we find that the system yields rather unusual plateaus and exhibits massive and massless phases for specific choices or ``tuning'' of exchange interactions. The relevance of this behavior in the study of ${\mathrm{NH}}_{4}{\mathrm{CuCl}}_{3}$ is discussed.

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Soft modes, gaps, and magnetization plateaus in one-dimensional spin- 12 antiferromagnetic Heisenberg models

Andreas Fledderjohann, C. Gerhardt, Michael Karbach +2 more

We study the one-dimensional spin-1/2 model with nearest and next-to-nearest-neighbor couplings exposed to a homogeneous magnetic field ${h}_{3}$ and a dimer field with period q and strength $\ensuremath{\delta}$. The latter generates a magnetization plateau at $M=(1\ensuremath{-}q/\ensuremath{\pi})/2$, which evolves with strength $\ensuremath{\delta}$ of the perturbation as ${\ensuremath{\delta}}^{\ensuremath{\epsilon}}$, where $\ensuremath{\epsilon}=\ensuremath{\epsilon}{(h}_{3},\ensuremath{\alpha})$ is related to the $\ensuremath{\eta}$ exponent which describes the critical behavior of the dimer structure factor, if the perturbation is switched off $(\ensuremath{\delta}=0)$. We also discuss the appearance of magnetization plateaus in ladder systems with l legs.We study the one-dimensional spin-1/2 model with nearest and next-to-nearest-neighbor couplings exposed to a homogeneous magnetic field ${h}_{3}$ and a dimer field with period q and strength $\ensuremath{\delta}$. The latter generates a magnetization plateau at $M=(1\ensuremath{-}q/\ensuremath{\pi})/2$, which evolves with strength $\ensuremath{\delta}$ of the perturbation as ${\ensuremath{\delta}}^{\ensuremath{\epsilon}}$, where $\ensuremath{\epsilon}=\ensuremath{\epsilon}{(h}_{3},\ensuremath{\alpha})$ is related to the $\ensuremath{\eta}$ exponent which describes the critical behavior of the dimer structure factor, if the perturbation is switched off $(\ensuremath{\delta}=0)$. We also discuss the appearance of magnetization plateaus in ladder systems with l legs.

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K. Ninios, Tao Hong, S.N. Herringer +4 more

Bulletin of the American Physical SocietyMar 23, 20110 citations

We investigate the ground-state magnetization plateaus appearing in spin-

\frac{1}{2}

two-leg ladders built up from dimerized antiferromagnetic Heisenberg chains and dimerized zig-zag interchain couplings. Using both Abelian bosonization and Lanczos methods we find that the system yields rather unusual plateaus and exhibits massive and massless phases for specific choices or ``tuning'' of exchange interactions. The relevance of this behavior in the study of

{\mathrm{NH}}_{4}{\mathrm{CuCl}}_{3}

is discussed.

We study the one-dimensional spin-1/2 model with nearest and next-to-nearest-neighbor couplings exposed to a homogeneous magnetic field

{h}_{3}

and a dimer field with period q and strength $\ensuremath{\delta}$. The latter generates a magnetization plateau at $M=(1\ensuremath{-}q/\ensuremath{\pi})/2$, which evolves with strength $\ensuremath{\delta}$ of the perturbation as ${\ensuremath{\delta}}^{\ensuremath{\epsilon}}$, where $\ensuremath{\epsilon}=\ensuremath{\epsilon}{(h}_{3},\ensuremath{\alpha})$ is related to the $\ensuremath{\eta}$ exponent which describes the critical behavior of the dimer structure factor, if the perturbation is switched off $(\ensuremath{\delta}=0)$. We also discuss the appearance of magnetization plateaus in ladder systems with l legs.