PIRSA:13040134 Conference Condensed Matter

DOI10.48660/13040134

Conference/School: 4 Corner Southwest Symposium 2013

Hao, Z. (2013). Spin-1/2 Heisenberg Antiferromagnet on the Kagome Lattice: a Z2 Spin Liquid with Fermionic Spinons. Perimeter Institute. https://pirsa.org/13040134

Hao, Zhihao. Spin-1/2 Heisenberg Antiferromagnet on the Kagome Lattice: a Z2 Spin Liquid with Fermionic Spinons. Perimeter Institute, Apr. 25, 2013, https://pirsa.org/13040134 

@misc{ pirsa_PIRSA:13040134,
  doi = {10.48660/13040134},
  url = {https://pirsa.org/13040134},
  author = {Hao, Zhihao},
  keywords = {Condensed Matter},
  language = {en},
  title = {Spin-1/2 Heisenberg Antiferromagnet on the Kagome Lattice: a Z2 Spin Liquid with Fermionic Spinons},
  publisher = {Perimeter Institute},
  year = {2013},
  month = {apr},
  note = {PIRSA:13040134 see, \url{https://pirsa.org}}
}

Abstract

Motivated by recent numerical and experimental studies of the spin-1/2 Heisenberg antiferromagnet on kagome, we formulate a many-body model for fermionic spinons, which are just uncoupled spins. The spinons interact with an emergent U(1) gauge field and experience strong short-range attraction in the S=0 channel. The ground state of the model is generically a Z(2) liquid. We calculate the edge of the two-spinon continuum and compare the theory to the slave-fermion approach to the Heisenberg model.

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