Magnetic Excitations of Spin Nematic State in Frustrated Ferromagnetic Chain

Abstract

By exploiting density-matrix renormalization group techniques, we investigate the dynamical spin structure factor of a spin-1/2 Heisenberg chain with ferromagnetic nearest-neighbor and antiferromagnetic next-nearest-neighbor exchange interactions in an applied magnetic field. In a field-induced spin nematic regime, we find gapless longitudinal and gapped transverse spin excitation spectra, in accordance with quasi-long-ranged longitudinal and short-ranged transverse spin correlations, respectively. The gapless point coincides with the dominant longitudinal spin correlation, whereas the gap position exhibits a characteristic field dependence contradicting the dominant transverse spin correlation.

4 pages, 5 figures, To appear in J. Phys. Soc. Jpn

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Cited by in corpus (11)

• Emergent many-body composite excitations of interacting spin-1/2 trimers
• The dynamics of linarite: Observations of magnetic excitations
• Multipolar phase in frustrated spin-1/2 and 1 chains
• Angular dependence of electron spin resonance for detecting quadrupolar liquid state of frustrated spin chains
• The magnetic phase diagram of the frustrated spin chain compound linarite, PbCuSO${}_4$(OH)${}_2$, as seen by neutron diffraction and ${}^1$H-NMR
• Thermal effects versus spin nematicity in a frustrated spin-1/2 chain
• Low-energy spin excitations of the frustrated ferromagnetic $J_1$-$J_2$ chain material linarite, PbCuSO${}_4$(OH)${}_2$, in applied magnetic fields $\mathbf{H}\parallel b$ axis
• Resonant inelastic x-ray scattering spectra of spinon, doublon, and quarton excitations of a spin-$\frac{1}{2}$ antiferromagnetic Heisenberg trimer chain
• Magnetic excitations and transport properties in frustrated ferromagnetic chain
• Impurity effects in one dimensional spin nematic liquid
• Excitation and transport of bound magnon clusters in frustrated ferromagnetic chain