Thermodynamics and phase transitions for the Heisenberg model on the pinwheel distorted kagome lattice

Ehsan Khatami, Rajiv R P Singh, Marcos Antonio Rigol

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We study the Heisenberg model on the pinwheel distorted kagome lattice as observed in the material Rb 2Cu 3SnF 12. Experimentally relevant thermodynamic properties at finite temperatures are computed utilizing numerical linked-cluster expansions. We also develop a Lanczos-based, zero-temperature, numerical linked-cluster expansion to study the approach of the pinwheel distorted lattice to the uniform kagome-lattice Heisenberg model. We find strong evidence for a phase transition before the uniform limit is reached, implying that the ground state of the kagome-lattice Heisenberg model is likely not pinwheel dimerized and is stable to finite pinwheel-dimerizing perturbations.

Original languageEnglish (US)
Article number224411
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume84
Issue number22
DOIs
StatePublished - Dec 15 2011

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Phase transitions
Thermodynamics
thermodynamics
Crystal lattices
Ground state
expansion
Thermodynamic properties
Temperature
thermodynamic properties
perturbation
ground state
temperature

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

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abstract = "We study the Heisenberg model on the pinwheel distorted kagome lattice as observed in the material Rb 2Cu 3SnF 12. Experimentally relevant thermodynamic properties at finite temperatures are computed utilizing numerical linked-cluster expansions. We also develop a Lanczos-based, zero-temperature, numerical linked-cluster expansion to study the approach of the pinwheel distorted lattice to the uniform kagome-lattice Heisenberg model. We find strong evidence for a phase transition before the uniform limit is reached, implying that the ground state of the kagome-lattice Heisenberg model is likely not pinwheel dimerized and is stable to finite pinwheel-dimerizing perturbations.",
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Thermodynamics and phase transitions for the Heisenberg model on the pinwheel distorted kagome lattice. / Khatami, Ehsan; Singh, Rajiv R P; Rigol, Marcos Antonio.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 84, No. 22, 224411, 15.12.2011.

Research output: Contribution to journalArticle

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