PIRSA:10050075 Conference

DOI10.48660/10050075

Conference/School: Emergence and Entanglement - 2010

Fisher, M. (2010). Gapless Spin Liquids in Two Dimensions. Perimeter Institute. https://pirsa.org/10050075

Fisher, Matthew. Gapless Spin Liquids in Two Dimensions. Perimeter Institute, May. 27, 2010, https://pirsa.org/10050075 

@misc{ pirsa_PIRSA:10050075,
  doi = {10.48660/10050075},
  url = {https://pirsa.org/10050075},
  author = {Fisher, Matthew},
  keywords = {},
  language = {en},
  title = {Gapless Spin Liquids in Two Dimensions},
  publisher = {Perimeter Institute},
  year = {2010},
  month = {may},
  note = {PIRSA:10050075 see, \url{https://pirsa.org}}
}

Abstract

Many crystalline materials predicted by band theory to be metals are insulators due to strong electron interactions. Both experiment and theory suggest that such Mott-insulators can exhibit exotic gapless spin-liquid ground states, having no magnetic or any other order. Such “critical spin liquids” will possess power law spin correlations which oscillate at various wavevectors. In a sub-class dubbed “Spin Bose-Metals” the singularities reside along surfaces in momentum space, analogous to a Fermi surface but without long-lived quasiparticle excitations. I will describe recent theoretical progress in accessing such states via controlled numerical and analytical studies on quasi-1d model systems.

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