Weak Mott insulators on the triangular lattice: Possibility of a gapless nematic quantum spin liquid
Name
Grover-2010-Weak Mott insulators.pdf
Size
178.49 KB
Format
Adobe PDF
Checksum (MD5)
ddba5e12d26afed93867f06801bb2a9c
Author(s)
Senthil, Todadri
Grover, Tarun
Lee, Patrick A.
Trivedi, N.
Date Issued
June 2010
Journal
Physical Review B
Publisher
American Physical Society
Citation
Grover, Tarun et al. “Weak Mott insulators on the triangular lattice: Possibility of a gapless nematic quantum spin liquid.” Physical Review B 81.24 (2010): 245121. © 2010 The American Physical Society.
Version
Final published version
Abstract
We study the energetics of Gutzwiller projected BCS states of various symmetries for the triangular lattice antiferromagnet with a four-particle ring exchange using variational Monte Carlo methods. In a range of parameters the energetically favored state is found to be a projected dx2−y2 paired state which breaks lattice rotational symmetry. We show that the properties of this nematic or orientationally ordered paired spin-liquid state as a function of temperature and pressure can account for many of the experiments on organic materials. We also study the ring-exchange model with ferromagnetic Heisenberg exchange and find that among the studied ansätze, a projected f-wave state is the most favorable.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevB.81.245121
