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Possible Nematic Spin Liquid In Spin-1 Antiferromagnetic System On The Square Lattice

Title: Possible Nematic Spin Liquid In Spin-1 Antiferromagnetic System On The Square Lattice: Implications For The Nematic Paramagnetic State Of Fese.
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Name(s): Gong, Shou-Shu, author
Zhu, W., author
Sheng, D. N., author
Yang, Kun, author
Type of Resource: text
Genre: Journal Article
Text
Journal Article
Date Issued: 2017-05-19
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: The exotic normal state of iron chalcogenide superconductor FeSe, which exhibits vanishing magnetic order and possesses an electronic nematic order, triggered extensive explorations of its magnetic ground state. To understand its novel properties, we study the ground state of a highly frustrated spin-1 system with bilinear-biquadratic interactions using an unbiased large-scale density matrix renormalization group. Remarkably, with increasing biquadratic interactions, we find a paramagnetic phase between Neel and stripe magnetic ordered phases. We identify this phase as a candidate of nematic quantum spin liquid by the compelling evidences, including vanished spin and quadrupolar orders, absence of lattice translational symmetry breaking, and a persistent nonzero lattice nematic order in the thermodynamic limit. The established quantum phase diagram naturally explains the observations of enhanced spin fluctuations of FeSe in neutron scattering measurement and the phase transition with increasing pressure. This identified paramagnetic phase provides a possibility to understand the novel properties of FeSe.
Identifier: FSU_libsubv1_wos_000401654300004 (IID), 10.1103/PhysRevB.95.205132 (DOI)
Keywords: model, bond ground-states, chalcogenides, dimensional quantum antiferromagnets, exchange, high-temperature superconductivity, order, peierls, pressure, valence-bond
Publication Note: The publisher's version of record is available at https://doi.org/10.1103/PhysRevB.95.205132
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000401654300004
Owner Institution: FSU
Is Part Of: Physical Review B.
2469-9950
Issue: iss. 20, vol. 95

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Gong, S. -S., Zhu, W., Sheng, D. N., & Yang, K. (2017). Possible Nematic Spin Liquid In Spin-1 Antiferromagnetic System On The Square Lattice: Implications For The Nematic Paramagnetic State Of Fese. Physical Review B. Retrieved from http://purl.flvc.org/fsu/fd/FSU_libsubv1_wos_000401654300004