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Nematic Spin Liquid Phase in a Frustrated Spin-1 System on the Square Lattice

Authors :
Hu, Wen-Jun
Gong, Shou-Shu
Lai, Hsin-Hua
Hu, Haoyu
Si, Qimiao
Nevidomskyy, Andriy H.
Source :
Phys. Rev. B 100, 165142 (2019)
Publication Year :
2017

Abstract

Frustration in quantum spin systems promote a variety of novel quantum phases. An important example is the frustrated spin-$1$ model on the square lattice with the nearest-neighbor bilinear ($J_1$) and biquadratic ($K_1$) interactions. We provide strong evidence for a nematic spin liquid phase in a range of $K_1/J_1$ near the SU(3)-symmetric point ($J_1 = K_1$), based on the linear flavor-wave theory and extensive density matrix renormalization group calculation. This phase displays no spin dipolar or quadrupolar order, preserves translational symmetry but spontaneously breaks $C_4$ lattice rotational symmetry, and possesses fluctuations peaked at the wavevector $(\pi, 2\pi/3)$. The spin excitation gap drops rapidly with system size and appears to be gapless, and the nematic order is attributed to the dominant $(\pi, 2\pi/3)$ fluctuations. Our results provide a novel mechanism for electronic nematic order and, more generally, open up a new avenue to explore frustration-induced exotic ground states.<br />Comment: 15 pages, 16 figures, 1 table

Details

Database :
arXiv
Journal :
Phys. Rev. B 100, 165142 (2019)
Publication Type :
Report
Accession number :
edsarx.1711.06523
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevB.100.165142