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Journal of Low Temperature Physics

, Volume 159, Issue 1–2, pp 55–59 | Cite as

Field Induced Exotic Phenomena of the S=1/2 Three-Leg Quantum Spin Nanotube

  • Tôru Sakai
  • Kouichi Okunishi
  • Kiyomi Okamoto
  • Chigak Itoi
  • Masahiro Sato
Article

Abstract

The magnetization process of the S=1/2 three-leg spin tube with an asymmetric exchange interaction in each triangle unit is investigated by the numerical exact diagonalization and the density matrix renormalization group calculation. It is found that the 1/3 magnetization plateau appears due to two different mechanisms depending on the asymmetry. The phase diagrams of the 1/3 plateau is presented. In addition some cusp-like anomalies are found in the magnetization curve.

Spin tube Magnetization plateau 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Tôru Sakai
    • 1
    • 2
    • 3
  • Kouichi Okunishi
    • 4
  • Kiyomi Okamoto
    • 5
  • Chigak Itoi
    • 6
  • Masahiro Sato
    • 7
  1. 1.Japan Atomic Energy AgencySayoJapan
  2. 2.Department of Material ScienceUniversity of HyogoKamigoriJapan
  3. 3.TRIP, JSTSaitamaJapan
  4. 4.Department of PhysicsNiigata UniversityNiigataJapan
  5. 5.Department of PhysicsTokyo Institute of TechnologyMeguro-kuJapan
  6. 6.Department of PhysicsNihon UniversityChiyoda-kuJapan
  7. 7.Condensed Matter Theory LaboratoryRIKENWakoJapan

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