Quasiparticles of spatially anisotropic triangular antiferromagnets in a magnetic field

Abstract

The spectral properties of the spin-1/2 Heisenberg antiferromagnet on an anisotropic triangular lattice in a magnetic field are investigated using a weak-interchain-coupling approach combined with exact solutions of a chain. Dominant modes induced by interchain interactions in a magnetic field behave as quasiparticles which show distinctive features such as anomalous incommensurate ordering and high-energy modes. In terms of them, various unusual features observed in the anisotropic triangular antiferromagnet Cs_2CuCl_4 in a magnetic field are quantitatively explained in a unified manner.

4 pages, 3 figures

References in corpus (23)

• Experimental realization of a 2D fractional quantum spin liquid
• Form factors of the XXZ Heisenberg spin-1/2 finite chain
• Dynamics of coupled quantum spin chains
• Observation of extended scattering continua characteristic of spin fractionalization in the 2D frustrated quantum magnet Cs2CuCl4 by neutron scattering
• Direct Measurement of the Spin Hamiltonian and Observation of Condensation of Magnons in the 2D Frustrated Quantum Magnet Cs2CuCl4
• Spinons and triplons in spatially anisotropic frustrated antiferromagnets
• Computation of dynamical correlation functions of Heisenberg chains: the gapless anisotropic regime
• Ordering in spatially anisotropic triangular antiferromagnets
• Finite-temperature dynamical magnetic susceptibility of quasi-one-dimensional frustrated spin-1/2 Heisenberg antiferromagnets
• Quasi-1D spin-1/2 Heisenberg magnets in their ordered phase: correlation functions
• The Quasi-1D S=1/2 Antiferromagnet Cs2CuCl4 in a Magnetic Field
• Magnetic phase transitions in the two-dimensional frustrated quantum antiferromagnet Cs2CuCl4
• Dynamically dominant excitations of string solutions in the spin-1/2 antiferromagnetic Heisenberg chain in magnetic fields
• Magnetization plateaux of S = 1/2 two-dimensional frustrated antiferromagnet Cs${}_2$CuBr${}_4$
• Longitudinal SDW order in a quasi-1D Ising-like quantum antiferromagnet
• Lineshape predictions via Bethe ansatz for the one-dimensional spin-1/2 Heisenberg antiferromagnet in a magnetic field
• Ground states of a frustrated spin-1/2 antifferomagnet: Cs_2CuCl_4 in a magnetic field
• Transition rates via Bethe ansatz for the spin-1/2 Heisenberg chain
• Quasiparticles governing the zero-temperature dynamics of the 1D spin-1/2 Heisenberg antiferromagnet in a magnetic field
• Frustration-induced eta inversion in the S=1/2 bond-alternating spin chain
• Incommensurate state in a quasi-one-dimensional $S=1/2$ bond-alternating antiferromagnet with frustration in magnetic fields
• Critical spin liquid at 1/3 magnetization in a spin-1/2 triangular antiferromagnet
• Commensurate and incommensurate ground states of Cs_2CuCl_4 in a magnetic field

Cited by in corpus (22)

• Extreme sensitivity of a frustrated quantum magnet: Cs_2CuCl_4
• Functional renormalization group for the anisotropic triangular antiferromagnet
• Mott Transition in the Two-Dimensional Hubbard Model
• Magnetic phase diagram of the spin-1/2 antiferromagnetic zigzag ladder
• Spectral Properties near the Mott Transition in the One-Dimensional Hubbard Model
• Determination of effective microscopic models for the frustrated antiferromagnets Cs${}_2$CuCl${}_4$ and Cs${}_2$CuBr${}_4$ by density functional methods
• Spectral properties near the Mott transition in the two-dimensional Hubbard model with next-nearest-neighbor hopping
• Elastic constants and ultrasonic attenuation in the cone state of the frustrated antiferromagnet Cs_2CuCl_4
• Spectral properties near the Mott transition in the two-dimensional t-J model
• Nature of the low energy excitations in the short range ordered region of Cs${}_2$CuCl${}_4$ as revealed by ${}^{133}$Cs NMR
• Observation of new magnetic ground state in frustrated quantum antiferromagnet spin liquid system Cs2CuCl4
• Characteristics of the Mott transition and electronic states of high-temperature cuprate superconductors from the perspective of the Hubbard model
• Dimensional modulation of spontaneous magnetic order in quasi-two-dimensional quantum antiferromagnets
• Hard-core boson approach to the spin-1/2 triangular-lattice antiferromagnet Cs${}_2$CuCl${}_4$ at finite temperatures in magnetic fields higher than the saturation field
• Magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet Cs${}_2$CuBr${}_4$
• Finite energy spectral function of an anisotropic 2D system of coupled Hubbard chains
• Spectral Properties of Interacting One-Dimensional Spinless Fermions
• Emergence and spectral-weight transfer of electronic states in the Hubbard ladder
• Elastic constants and ultrasound attenuation in the spin-liquid phase of Cs${}_2$CuCl${}_4$
• Evidence of one-dimensional magnetic heat transport in the triangular-lattice antiferromagnet Cs${}_2$CuCl${}_4$
• Effects of Dzyaloshinskii-Moriya interactions in volborthite: Magnetic orders and thermal Hall effect
• Relation between high-energy quasiparticles of quasi-one-dimensional antiferromagnets in a magnetic field and a doublon of a Hubbard chain