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Title: Nematic spin liquid phase in a frustrated spin-1 system on the square lattice

Journal Article · · Physical Review. B

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. Here 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 wave vector (π, 2π/3) . The spin excitation gap drops rapidly with system size and appears to be gapless, and the nematic order is attributed to the dominant (π, 2π/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.

Research Organization:
Rice Univ., Houston, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Robert A. Welch Foundation; Research Corporation for Science Advancement; National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; State of Florida; Rice University; Sun Microsystems; Sigma Solutions, Inc.
Grant/Contract Number:
SC0018197; DMR-1350237; C-1411; 11874078; 11834014; DMR-1157490; C-1818; EIA-0216467; CNS-1338099; DMR160057
OSTI ID:
1803293
Journal Information:
Physical Review. B, Vol. 100, Issue 16; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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