Monopole coherence and the instabilities of quantum spin ice

• Benton Owen

  RIKEN Center for Emergent Matter Sci.

抄録

It is known that quantum fluctuations in a spin ice material may stabilise a U(1) spin liquid phase, with gapless emergent photons and fractionalized spinons as excitations. This possibility has stimulated a vigorous experimental search for this spin liquid state in rare earth pyrochlores, with several candidate materials identified but as yet no definitive identification of the spin liquid state. This may be in part because competing phases encroach upon the spin liquid state, significantly shrinking its stability regime relative to expectations from the mean-field phase diagram. Here we apply perturbation theory to realistic microscopic models for pyrochlore magnets to explain the mechanism behind this. We demonstrate how the quantum coherence of spinons leads quickly to the demise of the spin liquid phase, leading either to the condension of single spinons or to the formation and condensation of spinon bound states.

収録刊行物

• 日本物理学会講演概要集

  日本物理学会講演概要集 72.1 (0), 2281-2281, 2017

  一般社団法人 日本物理学会

キーワード

• pyrochlores and spinels
• rare earth compounds (Pr systems)
• rare earth compounds (Yb systems)
• theory (talk in a theory session)
• magnetic structures and excitations
• effect of geometrical frustration

詳細情報

• CRID: 1390001206047826048
• NII論文ID: 130006710118
• DOI: 10.11316/jpsgaiyo.72.1.0_2281
• ISSN: 21890803
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可