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p6 - Chiral Resonating Valence Bonds in the Kagome Antiferromagnet

AUG 30, 2013 | 10:30 AM TO 12:00 PM

Details

WHERE:

The Graduate Center
365 Fifth Avenue

ROOM:

4102: Science Center

WHEN:

August 30, 2013: 10:30 AM-12:00 PM

ADMISSION:

Free

SPONSOR:

Intiative for the Theoretical Sciences

Description

Assa Auerbach (Technion, Israel)

The Kagome Heisenberg antiferromagnet is mapped onto an effective Hamiltonian on the star superlattice by Contractor Renormalization. Within our accuracy, magnetic and translational symmetries are not broken (i.e. a spin liquid ground state). However, we discover the onset of p6 - chirality symmetry breaking. This is understood by simple mean field analysis. We discuss an experimentally and numerical way to detect this two-dimer p6 chiral order parameter. See more