Spin liquids and their transition in spin-1/2 kagome antiferromagnets

Date

Aug 15, 2014

Time

10:30 AM - 11:30 AM

Speaker

Yin-Chen He

Affiliation

MPIPKS

Language

en

Main Topic

Physik

Other Topics

Physik

Host

Condensed Matter Informal Seminar

Description

By using density matrix renormalization group, we study the spin liquid phases in spin-$1/2$ XXZ kagome antiferromagnets. We find that the emergence of spin liquid phase doesn't depend on the anisotropy of XXZ interaction, particularly the two extreme limits---Ising (strong $S^z$ interaction) and XY (zero $S^z$ interaction)---host the same spin liquid phases as the $SU(2)$ Heisenberg model. We have obtained both time-reversal invariant spin liquid and chiral spin liquid with spontaneous time-reversal symmetry breaking, and we show they will continuously transit into each other when one tunes the second and third neighbor interactions. I will also discuss the possible implication of our results on the nature of spin liquid in nearest neighbor XXZ kagome antiferromagnets, including the most studied nearest neighbor spin-$1/2$ kagome anti-ferromagnetic Heisenberg model.

Last modified: Aug 15, 2014, 9:40:16 AM