Spin-1/2 Heisenberg Antiferromagnet on the Kagome Lattice: a Z2 Spin Liquid with Fermionic Spinons
APA
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
MLA
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
BibTex
@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}} }
University of Waterloo
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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.