Quantum field induced orderings in fully frustrated Ising spin systems

Shu Tanaka, Masaki Hirano, Seiji Miyashita

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We study ordering mechanism which is induced by a quantum fluctuation in fully frustrated Ising spin systems. Since there are many degenerated states in frustrated systems, "order by thermal disorder" often takes place due to a kind of entropy effect. To consider "order by quantum disorder" in fully frustrated Ising spin systems, we apply transverse field as a quantum fluctuation. In triangular antiferromagnetic Ising spin system, there exists a ferromagnetic correlation in each sublattice. The sublattice correlation at zero temperature is enlarged due to transverse field. The quantum fluctuation enhances the solid order at zero temperature. This is an example of quantum field induced ordering in fully frustrated systems. We also study a case in which the transverse field induces a reentrant behavior as another type of order by quantum disorder, and compare correspondent cases in the classical systems.

Original languageEnglish
Pages (from-to)766-768
Number of pages3
JournalPhysica E: Low-Dimensional Systems and Nanostructures
Volume43
Issue number3
DOIs
Publication statusPublished - 2011 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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