Nematic phase and phase separation near saturation field in frustrated ferromagnets

Abstract

We study the effects of quantum fluctuations in magnetic properties of quantum frustrated ferromagnets in a magnetic field. It is shown that a non-classical phase or a phase separation appears due to quantum fluctuations below the saturation field in a parameter range close to the classical zero-field phase boundary between ferromagnetic and antiferromagnetic phases, for the case that the classical antiferromagnetic state is not an eigenstate of the quantum model. As an example to which this argument is applicable, we study the S=1/2 J1-J2 Heisenberg model with ferromagnetic J1 (J1<0) on the bcc lattice using a dilute Bose gas approach. For -1.50097 < J1/J2 < -1.389, magnons form f-wave two-magnon bound states, leading to a spin nematic phase, and for -1.389 < J1/J2 < -0.48 a canted coplanar antiferromagnetic phase appears accompanied with a phase separation below the saturation field.

13 pages, 12 figures

References in corpus (19)

• Spin current and magneto-electric effect in non-collinear magnets
• Bose-Einstein Condensation in Magnetic Insulators
• Vector chiral and multipolar orders in the spin-1/2 frustrated ferromagnetic chain in magnetic field
• Emergent multipolar spin correlations in a fluctuating spiral - The frustrated ferromagnetic S=1/2 Heisenberg chain in a magnetic field
• Magnetic properties of BaCdVO(PO_4)_2: a strongly frustrated spin-1/2 square lattice close to the quantum critical regime
• Bose-Einstein Condensation of Magnons in Cs2CuCl4
• Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model
• Multi-magnon bound states in the frustrated ferromagnetic 1D chain
• New high magnetic field phase of the frustrated $S=1/2$ chain compound LiCuVO${}_4$
• Correlation functions and excitation spectrum of the frustrated ferromagnetic spin-1/2 chain in an external magnetic field
• Evidence of a bond-nematic phase in LiCuVO4
• Extension of the spin-1/2 frustrated square lattice model: the case of layered vanadium phosphates
• Octupolar order in the multiple spin exchange model on a triangular lattice
• Multiple Magnon Modes and Consequences for the Bose-Einstein Condensed Phase in BaCuSi2O6
• Efimov effect in quantum magnets
• Spin nematic order in multiple-spin exchange models on the triangular lattice
• Projective studies of spin nematics in a quantum frustrated ferromagnet
• Ferromagnetic frustrated spin systems on the square lattice: a Schwinger boson study
• Nematic order in the multiple-spin exchange model on the triangular lattice

Cited by in corpus (30)

• Nuclear magnetic resonance signature of the spin-nematic phase in LiCuVO${}_4$ at high magnetic fields
• Ghost in the machine: Theory of inelastic neutron scattering in a field-induced spin-nematic state
• Where is the Quantum Spin Nematic?
• Three-Dimensional Crystallization of Vortex Strings in Frustrated Quantum Magnets
• Spectral evidence of a ghostly transition: Theory of NMR 1/T_1 relaxation in a quantum spin nematic in applied magnetic field
• Magnon condensation with finite degeneracy on the triangular lattice
• Putative spin-nematic phase in BaCdVO(PO${}_4$)${}_2$
• Presaturation phase with no dipolar order in a quantum ferro-antiferromagnet
• Thermodynamics of the frustrated $J_1$-$J_2$ Heisenberg ferromagnet on the body-centered cubic lattice with arbitrary spin
• Chiral liquid phase of simple quantum magnets
• High-temperature expansion for frustrated magnets: Application to the J1-J2 model on the BCC lattice
• Electron spin resonance for the detection of long-range spin nematic order
• Magnetic phase diagram slightly below the saturation field in the stacked $J_1$-$J_2$ model in the square lattice with the $J_{\text{C}}$ interlayer coupling
• Collinear Spin-density-wave Order and Anisotropic Spin Fluctuations in the Frustrated $J_1$--$J_2$ Chain Magnet NaCuMoO${}_4$(OH)
• Magnetic structure and spin waves in the frustrated ferro-antiferromagnet Pb${}_2$VO(PO${}_4$)${}_2$
• Pre-saturation phase in the frustrated ferro-antiferromagnet Pb${}_2$VO(PO${}_4$)${}_2$
• NMR evidence against a spin-nematic nature of the presaturation phase in the frustrated magnet SrZnVO(PO4)2
• Novel quantum phase of the chromium spinel oxide HgCr${}_2$O${}_4$ in high magnetic fields
• Spin supersolid phase in coupled alternating spin chains
• Inelastic neutron scattering determination of the spin Hamiltonian for BaCdVO(PO${}_4$)${}_2$
• Spin nematics in frustrated spin-dimer systems with bilayer structure
• Electron spin resonance in a dilute magnon gas as a probe of magnon scattering resonances
• Mixed-spin system with supersolid phases: Magnetocaloric effect and thermal properties
• Spin-orbit interaction driven dimerization in one dimensional frustrated magnets
• Phase diagram and spin waves in the frustrated ferro-antiferromagnet SrZnVO(PO4)2
• Critical dielectric susceptibility at a magnetic BEC quantum critical point
• Quantum spin solver near saturation: QS${}_{}^3$
• Dynamics of quantum spin-nematics: Comparisons with canted antiferromagnets
• Projected Holstein-Primakoff boson representation of quantum spins for spin wave theory
• Narrowly avoided spin-nematic phase in BaCdVO(PO${}_4$)${}_2$: NMR evidence